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class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">目录</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">移至侧栏</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">隐藏</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">序言</div> </a> </li> <li id="toc-数学性质" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#数学性质"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>数学性质</span> </div> </a> <button aria-controls="toc-数学性质-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>开关数学性质子章节</span> </button> <ul id="toc-数学性质-sublist" class="vector-toc-list"> <li id="toc-基本运算" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#基本运算"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.1</span> <span>基本运算</span> </div> </a> <ul id="toc-基本运算-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-在科学中" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#在科学中"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>在科学中</span> </div> </a> <ul id="toc-在科学中-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-在體育中" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#在體育中"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>在體育中</span> </div> </a> <ul id="toc-在體育中-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-在人類文化中" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#在人類文化中"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>在人類文化中</span> </div> </a> <ul id="toc-在人類文化中-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-時間與曆法" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#時間與曆法"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>時間與曆法</span> </div> </a> <ul id="toc-時間與曆法-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-另見" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#另見"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>另見</span> </div> </a> <ul id="toc-另見-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-參考" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#參考"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>參考</span> </div> </a> <ul id="toc-參考-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="目录" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" title="目录" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="开关目录" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">开关目录</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">7</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="前往另一种语言写成的文章。160种语言可用" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-160" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">160种语言</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ab mw-list-item"><a href="https://ab.wikipedia.org/wiki/7_(%D0%B0%D1%85%D1%8B%D4%A5%D1%85%D1%8C%D0%B0%D3%A1%D0%B0%D1%80%D0%B0)" title="7 (ахыԥхьаӡара) – 阿布哈西亚语" lang="ab" hreflang="ab" data-title="7 (ахыԥхьаӡара)" data-language-autonym="Аԥсшәа" data-language-local-name="阿布哈西亚语" class="interlanguage-link-target"><span>Аԥсшәа</span></a></li><li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/7_(getal)" title="7 (getal) – 南非荷兰语" lang="af" hreflang="af" data-title="7 (getal)" data-language-autonym="Afrikaans" data-language-local-name="南非荷兰语" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-am mw-list-item"><a href="https://am.wikipedia.org/wiki/%E1%88%B0%E1%89%A3%E1%89%B5" title="ሰባት – 阿姆哈拉语" lang="am" hreflang="am" data-title="ሰባት" data-language-autonym="አማርኛ" data-language-local-name="阿姆哈拉语" class="interlanguage-link-target"><span>አማርኛ</span></a></li><li class="interlanguage-link interwiki-ang mw-list-item"><a href="https://ang.wikipedia.org/wiki/Seofon" title="Seofon – 古英语" lang="ang" hreflang="ang" data-title="Seofon" data-language-autonym="Ænglisc" data-language-local-name="古英语" class="interlanguage-link-target"><span>Ænglisc</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/7_(%D8%B9%D8%AF%D8%AF)" title="7 (عدد) – 阿拉伯语" lang="ar" hreflang="ar" data-title="7 (عدد)" data-language-autonym="العربية" data-language-local-name="阿拉伯语" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-arc mw-list-item"><a href="https://arc.wikipedia.org/wiki/7_(%DC%A1%DC%A2%DC%9D%DC%A2%DC%90)" title="7 (ܡܢܝܢܐ) – 阿拉米语" lang="arc" hreflang="arc" data-title="7 (ܡܢܝܢܐ)" data-language-autonym="ܐܪܡܝܐ" data-language-local-name="阿拉米语" class="interlanguage-link-target"><span>ܐܪܡܝܐ</span></a></li><li class="interlanguage-link interwiki-ary mw-list-item"><a href="https://ary.wikipedia.org/wiki/7" title="7 – 摩洛哥阿拉伯文" lang="ary" hreflang="ary" data-title="7" data-language-autonym="الدارجة" data-language-local-name="摩洛哥阿拉伯文" class="interlanguage-link-target"><span>الدارجة</span></a></li><li class="interlanguage-link interwiki-as mw-list-item"><a href="https://as.wikipedia.org/wiki/%E0%A7%AD" title="৭ – 阿萨姆语" lang="as" hreflang="as" data-title="৭" data-language-autonym="অসমীয়া" data-language-local-name="阿萨姆语" class="interlanguage-link-target"><span>অসমীয়া</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Siete" title="Siete – 阿斯图里亚斯语" lang="ast" hreflang="ast" data-title="Siete" data-language-autonym="Asturianu" data-language-local-name="阿斯图里亚斯语" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-av mw-list-item"><a href="https://av.wikipedia.org/wiki/%D0%90%D0%BD%D0%BA%D1%8C%D0%B3%D0%BE" title="Анкьго – 阿瓦尔语" lang="av" hreflang="av" data-title="Анкьго" data-language-autonym="Авар" data-language-local-name="阿瓦尔语" class="interlanguage-link-target"><span>Авар</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/7_(%C9%99d%C9%99d)" title="7 (ədəd) – 阿塞拜疆语" lang="az" hreflang="az" data-title="7 (ədəd)" data-language-autonym="Azərbaycanca" data-language-local-name="阿塞拜疆语" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-azb mw-list-item"><a href="https://azb.wikipedia.org/wiki/%DB%B7_(%D8%B3%D8%A7%DB%8C%DB%8C)" title="۷ (سایی) – South Azerbaijani" lang="azb" hreflang="azb" data-title="۷ (سایی)" data-language-autonym="تۆرکجه" data-language-local-name="South Azerbaijani" class="interlanguage-link-target"><span>تۆرکجه</span></a></li><li class="interlanguage-link interwiki-ba mw-list-item"><a href="https://ba.wikipedia.org/wiki/%D0%95%D1%82%D0%B5_(%D2%BB%D0%B0%D0%BD)" title="Ете (һан) – 巴什基尔语" lang="ba" hreflang="ba" data-title="Ете (һан)" data-language-autonym="Башҡортса" data-language-local-name="巴什基尔语" class="interlanguage-link-target"><span>Башҡортса</span></a></li><li class="interlanguage-link interwiki-ban mw-list-item"><a href="https://ban.wikipedia.org/wiki/7_(angka)" title="7 (angka) – 巴厘语" lang="ban" hreflang="ban" data-title="7 (angka)" data-language-autonym="Basa Bali" data-language-local-name="巴厘语" class="interlanguage-link-target"><span>Basa Bali</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/7_(%D0%BB%D1%96%D0%BA)" title="7 (лік) – 白俄罗斯语" lang="be" hreflang="be" data-title="7 (лік)" data-language-autonym="Беларуская" data-language-local-name="白俄罗斯语" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-be-x-old mw-list-item"><a href="https://be-tarask.wikipedia.org/wiki/7_(%D0%BB%D1%96%D0%BA)" title="7 (лік) – Belarusian (Taraškievica orthography)" lang="be-tarask" hreflang="be-tarask" data-title="7 (лік)" data-language-autonym="Беларуская (тарашкевіца)" data-language-local-name="Belarusian (Taraškievica orthography)" class="interlanguage-link-target"><span>Беларуская (тарашкевіца)</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/7_(%D1%87%D0%B8%D1%81%D0%BB%D0%BE)" title="7 (число) – 保加利亚语" lang="bg" hreflang="bg" data-title="7 (число)" data-language-autonym="Български" data-language-local-name="保加利亚语" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bi mw-list-item"><a href="https://bi.wikipedia.org/wiki/Seven" title="Seven – 比斯拉马语" lang="bi" hreflang="bi" data-title="Seven" data-language-autonym="Bislama" data-language-local-name="比斯拉马语" class="interlanguage-link-target"><span>Bislama</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A7%AD_(%E0%A6%B8%E0%A6%82%E0%A6%96%E0%A7%8D%E0%A6%AF%E0%A6%BE)" title="৭ (সংখ্যা) – 孟加拉语" lang="bn" hreflang="bn" data-title="৭ (সংখ্যা)" data-language-autonym="বাংলা" data-language-local-name="孟加拉语" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-bo mw-list-item"><a href="https://bo.wikipedia.org/wiki/%E0%BC%A7_(%E0%BD%82%E0%BE%B2%E0%BD%84%E0%BD%A6%E0%BC%8B%E0%BD%80%E0%BC%8D)" title="༧ (གྲངས་ཀ།) – 藏语" lang="bo" hreflang="bo" data-title="༧ (གྲངས་ཀ།)" data-language-autonym="བོད་ཡིག" data-language-local-name="藏语" class="interlanguage-link-target"><span>བོད་ཡིག</span></a></li><li class="interlanguage-link interwiki-br mw-list-item"><a href="https://br.wikipedia.org/wiki/Seizh_(niver)" title="Seizh (niver) – 布列塔尼语" lang="br" hreflang="br" data-title="Seizh (niver)" data-language-autonym="Brezhoneg" data-language-local-name="布列塔尼语" class="interlanguage-link-target"><span>Brezhoneg</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/7_(broj)" title="7 (broj) – 波斯尼亚语" lang="bs" hreflang="bs" data-title="7 (broj)" data-language-autonym="Bosanski" data-language-local-name="波斯尼亚语" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-bug mw-list-item"><a href="https://bug.wikipedia.org/wiki/7_(nomoro)" title="7 (nomoro) – 布吉语" lang="bug" hreflang="bug" data-title="7 (nomoro)" data-language-autonym="Basa Ugi" data-language-local-name="布吉语" class="interlanguage-link-target"><span>Basa Ugi</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Nombre_set" title="Nombre set – 加泰罗尼亚语" lang="ca" hreflang="ca" data-title="Nombre set" data-language-autonym="Català" data-language-local-name="加泰罗尼亚语" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cdo mw-list-item"><a href="https://cdo.wikipedia.org/wiki/7" title="7 – Mindong" lang="cdo" hreflang="cdo" data-title="7" data-language-autonym="閩東語 / Mìng-dĕ̤ng-ngṳ̄" data-language-local-name="Mindong" class="interlanguage-link-target"><span>閩東語 / Mìng-dĕ̤ng-ngṳ̄</span></a></li><li class="interlanguage-link interwiki-ceb mw-list-item"><a href="https://ceb.wikipedia.org/wiki/7_(numero)" title="7 (numero) – 宿务语" lang="ceb" hreflang="ceb" data-title="7 (numero)" data-language-autonym="Cebuano" data-language-local-name="宿务语" class="interlanguage-link-target"><span>Cebuano</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%D9%A7_(%DA%98%D9%85%D8%A7%D8%B1%DB%95)" title="٧ (ژمارە) – 中库尔德语" lang="ckb" hreflang="ckb" data-title="٧ (ژمارە)" data-language-autonym="کوردی" data-language-local-name="中库尔德语" class="interlanguage-link-target"><span>کوردی</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/7_(%C4%8D%C3%ADslo)" title="7 (číslo) – 捷克语" lang="cs" hreflang="cs" data-title="7 (číslo)" data-language-autonym="Čeština" data-language-local-name="捷克语" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-cu mw-list-item"><a href="https://cu.wikipedia.org/wiki/%D0%A1%D1%94%D0%B4%D0%BC%D1%8C" title="Сєдмь – 教会斯拉夫语" lang="cu" hreflang="cu" data-title="Сєдмь" data-language-autonym="Словѣньскъ / ⰔⰎⰑⰂⰡⰐⰠⰔⰍⰟ" data-language-local-name="教会斯拉夫语" class="interlanguage-link-target"><span>Словѣньскъ / ⰔⰎⰑⰂⰡⰐⰠⰔⰍⰟ</span></a></li><li class="interlanguage-link interwiki-cv mw-list-item"><a href="https://cv.wikipedia.org/wiki/7_(%D1%85%D0%B8%D1%81%D0%B5%D0%BF)" title="7 (хисеп) – 楚瓦什语" lang="cv" hreflang="cv" data-title="7 (хисеп)" data-language-autonym="Чӑвашла" data-language-local-name="楚瓦什语" class="interlanguage-link-target"><span>Чӑвашла</span></a></li><li class="interlanguage-link interwiki-cy mw-list-item"><a href="https://cy.wikipedia.org/wiki/Saith" title="Saith – 威尔士语" lang="cy" hreflang="cy" data-title="Saith" data-language-autonym="Cymraeg" data-language-local-name="威尔士语" class="interlanguage-link-target"><span>Cymraeg</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/7_(tal)" title="7 (tal) – 丹麦语" lang="da" hreflang="da" data-title="7 (tal)" data-language-autonym="Dansk" data-language-local-name="丹麦语" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-dag mw-list-item"><a href="https://dag.wikipedia.org/wiki/Ay%C9%94p%C9%94in" title="Ayɔpɔin – Dagbani" lang="dag" hreflang="dag" data-title="Ayɔpɔin" data-language-autonym="Dagbanli" data-language-local-name="Dagbani" class="interlanguage-link-target"><span>Dagbanli</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Sieben" title="Sieben – 德语" lang="de" hreflang="de" data-title="Sieben" data-language-autonym="Deutsch" data-language-local-name="德语" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/7_(%CE%B1%CF%81%CE%B9%CE%B8%CE%BC%CF%8C%CF%82)" title="7 (αριθμός) – 希腊语" lang="el" hreflang="el" data-title="7 (αριθμός)" data-language-autonym="Ελληνικά" data-language-local-name="希腊语" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-eml mw-list-item"><a href="https://eml.wikipedia.org/wiki/7_(n%C3%B9mer)" title="7 (nùmer) – Emiliano-Romagnolo" lang="egl" hreflang="egl" data-title="7 (nùmer)" data-language-autonym="Emiliàn e rumagnòl" data-language-local-name="Emiliano-Romagnolo" class="interlanguage-link-target"><span>Emiliàn e rumagnòl</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/7" title="7 – 英语" lang="en" hreflang="en" data-title="7" data-language-autonym="English" data-language-local-name="英语" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/7_(nombro)" title="7 (nombro) – 世界语" lang="eo" hreflang="eo" data-title="7 (nombro)" data-language-autonym="Esperanto" data-language-local-name="世界语" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Siete" title="Siete – 西班牙语" lang="es" hreflang="es" data-title="Siete" data-language-autonym="Español" data-language-local-name="西班牙语" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Seitse" title="Seitse – 爱沙尼亚语" lang="et" hreflang="et" data-title="Seitse" data-language-autonym="Eesti" data-language-local-name="爱沙尼亚语" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Zazpi" title="Zazpi – 巴斯克语" lang="eu" hreflang="eu" data-title="Zazpi" data-language-autonym="Euskara" data-language-local-name="巴斯克语" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%DB%B7" title="۷ – 波斯语" lang="fa" hreflang="fa" data-title="۷" data-language-autonym="فارسی" data-language-local-name="波斯语" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-ff mw-list-item"><a href="https://ff.wikipedia.org/wiki/Jowee%C9%97i%C9%97i" title="Joweeɗiɗi – 富拉语" lang="ff" hreflang="ff" data-title="Joweeɗiɗi" data-language-autonym="Fulfulde" data-language-local-name="富拉语" class="interlanguage-link-target"><span>Fulfulde</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/7_(luku)" title="7 (luku) – 芬兰语" lang="fi" hreflang="fi" data-title="7 (luku)" data-language-autonym="Suomi" data-language-local-name="芬兰语" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fj mw-list-item"><a href="https://fj.wikipedia.org/wiki/Vitu" title="Vitu – 斐济语" lang="fj" hreflang="fj" data-title="Vitu" data-language-autonym="Na Vosa Vakaviti" data-language-local-name="斐济语" class="interlanguage-link-target"><span>Na Vosa Vakaviti</span></a></li><li class="interlanguage-link interwiki-fo mw-list-item"><a href="https://fo.wikipedia.org/wiki/7_(tal)" title="7 (tal) – 法罗语" lang="fo" hreflang="fo" data-title="7 (tal)" data-language-autonym="Føroyskt" data-language-local-name="法罗语" class="interlanguage-link-target"><span>Føroyskt</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/7_(nombre)" title="7 (nombre) – 法语" lang="fr" hreflang="fr" data-title="7 (nombre)" data-language-autonym="Français" data-language-local-name="法语" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-frr mw-list-item"><a href="https://frr.wikipedia.org/wiki/S%C3%B6%C3%B6wen" title="Sööwen – 北弗里西亚语" lang="frr" hreflang="frr" data-title="Sööwen" data-language-autonym="Nordfriisk" data-language-local-name="北弗里西亚语" class="interlanguage-link-target"><span>Nordfriisk</span></a></li><li class="interlanguage-link interwiki-fur mw-list-item"><a href="https://fur.wikipedia.org/wiki/7_(numar)" title="7 (numar) – 弗留利语" lang="fur" hreflang="fur" data-title="7 (numar)" data-language-autonym="Furlan" data-language-local-name="弗留利语" class="interlanguage-link-target"><span>Furlan</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/7_(uimhir)" title="7 (uimhir) – 爱尔兰语" lang="ga" hreflang="ga" data-title="7 (uimhir)" data-language-autonym="Gaeilge" data-language-local-name="爱尔兰语" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gan mw-list-item"><a href="https://gan.wikipedia.org/wiki/7" title="7 – 赣语" lang="gan" hreflang="gan" data-title="7" data-language-autonym="贛語" data-language-local-name="赣语" class="interlanguage-link-target"><span>贛語</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Sete" title="Sete – 加利西亚语" lang="gl" hreflang="gl" data-title="Sete" data-language-autonym="Galego" data-language-local-name="加利西亚语" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-gn mw-list-item"><a href="https://gn.wikipedia.org/wiki/Pok%C3%B5i" title="Pokõi – 瓜拉尼语" lang="gn" hreflang="gn" data-title="Pokõi" data-language-autonym="Avañe'ẽ" data-language-local-name="瓜拉尼语" class="interlanguage-link-target"><span>Avañe'ẽ</span></a></li><li class="interlanguage-link interwiki-gor mw-list-item"><a href="https://gor.wikipedia.org/wiki/7" title="7 – 哥伦打洛语" lang="gor" hreflang="gor" data-title="7" data-language-autonym="Bahasa Hulontalo" data-language-local-name="哥伦打洛语" class="interlanguage-link-target"><span>Bahasa Hulontalo</span></a></li><li class="interlanguage-link interwiki-ha mw-list-item"><a href="https://ha.wikipedia.org/wiki/7_(al%C6%99alami)" title="7 (alƙalami) – 豪萨语" lang="ha" hreflang="ha" data-title="7 (alƙalami)" data-language-autonym="Hausa" data-language-local-name="豪萨语" class="interlanguage-link-target"><span>Hausa</span></a></li><li class="interlanguage-link interwiki-hak mw-list-item"><a href="https://hak.wikipedia.org/wiki/7" title="7 – 客家语" lang="hak" hreflang="hak" data-title="7" data-language-autonym="客家語 / Hak-kâ-ngî" data-language-local-name="客家语" class="interlanguage-link-target"><span>客家語 / Hak-kâ-ngî</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/7_(%D7%9E%D7%A1%D7%A4%D7%A8)" title="7 (מספר) – 希伯来语" lang="he" hreflang="he" data-title="7 (מספר)" data-language-autonym="עברית" data-language-local-name="希伯来语" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Sedam" title="Sedam – 克罗地亚语" lang="hr" hreflang="hr" data-title="Sedam" data-language-autonym="Hrvatski" data-language-local-name="克罗地亚语" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-ht mw-list-item"><a href="https://ht.wikipedia.org/wiki/7_(nonm)" title="7 (nonm) – 海地克里奥尔语" lang="ht" hreflang="ht" data-title="7 (nonm)" data-language-autonym="Kreyòl ayisyen" data-language-local-name="海地克里奥尔语" class="interlanguage-link-target"><span>Kreyòl ayisyen</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/7_(sz%C3%A1m)" title="7 (szám) – 匈牙利语" lang="hu" hreflang="hu" data-title="7 (szám)" data-language-autonym="Magyar" data-language-local-name="匈牙利语" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D5%85%D5%B8%D5%A9" title="Յոթ – 亚美尼亚语" lang="hy" hreflang="hy" data-title="Յոթ" data-language-autonym="Հայերեն" data-language-local-name="亚美尼亚语" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-ia mw-list-item"><a href="https://ia.wikipedia.org/wiki/7_(numero)" title="7 (numero) – 国际语" lang="ia" hreflang="ia" data-title="7 (numero)" data-language-autonym="Interlingua" data-language-local-name="国际语" class="interlanguage-link-target"><span>Interlingua</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/7_(angka)" title="7 (angka) – 印度尼西亚语" lang="id" hreflang="id" data-title="7 (angka)" data-language-autonym="Bahasa Indonesia" data-language-local-name="印度尼西亚语" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-ig mw-list-item"><a href="https://ig.wikipedia.org/wiki/Asaa" title="Asaa – 伊博语" lang="ig" hreflang="ig" data-title="Asaa" data-language-autonym="Igbo" data-language-local-name="伊博语" class="interlanguage-link-target"><span>Igbo</span></a></li><li class="interlanguage-link interwiki-ik mw-list-item"><a href="https://ik.wikipedia.org/wiki/Tallimat_mal%C4%A1uk" title="Tallimat malġuk – 伊努皮克语" lang="ik" hreflang="ik" data-title="Tallimat malġuk" data-language-autonym="Iñupiatun" data-language-local-name="伊努皮克语" class="interlanguage-link-target"><span>Iñupiatun</span></a></li><li class="interlanguage-link interwiki-inh mw-list-item"><a href="https://inh.wikipedia.org/wiki/7_(%D1%82%D0%B0%D1%8C%D1%80%D0%B0%D1%85%D1%8C)" title="7 (таьрахь) – 印古什语" lang="inh" hreflang="inh" data-title="7 (таьрахь)" data-language-autonym="ГӀалгӀай" data-language-local-name="印古什语" class="interlanguage-link-target"><span>ГӀалгӀай</span></a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/Sj%C3%B6" title="Sjö – 冰岛语" lang="is" hreflang="is" data-title="Sjö" data-language-autonym="Íslenska" data-language-local-name="冰岛语" class="interlanguage-link-target"><span>Íslenska</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/7_(numero)" title="7 (numero) – 意大利语" lang="it" hreflang="it" data-title="7 (numero)" data-language-autonym="Italiano" data-language-local-name="意大利语" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/7" title="7 – 日语" lang="ja" hreflang="ja" data-title="7" data-language-autonym="日本語" data-language-local-name="日语" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/7_(%E1%83%A0%E1%83%98%E1%83%AA%E1%83%AE%E1%83%95%E1%83%98)" title="7 (რიცხვი) – 格鲁吉亚语" lang="ka" hreflang="ka" data-title="7 (რიცხვი)" data-language-autonym="ქართული" data-language-local-name="格鲁吉亚语" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-kcg mw-list-item"><a href="https://kcg.wikipedia.org/wiki/7" title="7 – 卡塔布语" lang="kcg" hreflang="kcg" data-title="7" data-language-autonym="Tyap" data-language-local-name="卡塔布语" class="interlanguage-link-target"><span>Tyap</span></a></li><li class="interlanguage-link interwiki-kge mw-list-item"><a href="https://kge.wikipedia.org/wiki/7" title="7 – Komering" lang="kge" hreflang="kge" data-title="7" data-language-autonym="Kumoring" data-language-local-name="Komering" class="interlanguage-link-target"><span>Kumoring</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/7_(%D1%81%D0%B0%D0%BD)" title="7 (сан) – 哈萨克语" lang="kk" hreflang="kk" data-title="7 (сан)" data-language-autonym="Қазақша" data-language-local-name="哈萨克语" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-kn mw-list-item"><a href="https://kn.wikipedia.org/wiki/%E0%B2%8F%E0%B2%B3%E0%B3%81" title="ಏಳು – 卡纳达语" lang="kn" hreflang="kn" data-title="ಏಳು" data-language-autonym="ಕನ್ನಡ" data-language-local-name="卡纳达语" class="interlanguage-link-target"><span>ಕನ್ನಡ</span></a></li><li class="interlanguage-link interwiki-knc mw-list-item"><a href="https://knc.wikipedia.org/wiki/7" title="7 – Central Kanuri" lang="knc" hreflang="knc" data-title="7" data-language-autonym="Yerwa Kanuri" data-language-local-name="Central Kanuri" class="interlanguage-link-target"><span>Yerwa Kanuri</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/7" title="7 – 韩语" lang="ko" hreflang="ko" data-title="7" data-language-autonym="한국어" data-language-local-name="韩语" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-koi mw-list-item"><a href="https://koi.wikipedia.org/wiki/7_(%D1%81%D0%B8%D0%B7%D0%B8%D0%BC)" title="7 (сизим) – 科米-彼尔米亚克语" lang="koi" hreflang="koi" data-title="7 (сизим)" data-language-autonym="Перем коми" data-language-local-name="科米-彼尔米亚克语" class="interlanguage-link-target"><span>Перем коми</span></a></li><li class="interlanguage-link interwiki-ks mw-list-item"><a href="https://ks.wikipedia.org/wiki/7_(%DA%AF%D8%B1%D9%8E%D9%9B%D9%86%D9%9B%D8%AF)" title="7 (گرَٛنٛد) – 克什米尔语" lang="ks" hreflang="ks" data-title="7 (گرَٛنٛد)" data-language-autonym="कॉशुर / کٲشُر" data-language-local-name="克什米尔语" class="interlanguage-link-target"><span>कॉशुर / کٲشُر</span></a></li><li class="interlanguage-link interwiki-ku mw-list-item"><a href="https://ku.wikipedia.org/wiki/Heft" title="Heft – 库尔德语" lang="ku" hreflang="ku" data-title="Heft" data-language-autonym="Kurdî" data-language-local-name="库尔德语" class="interlanguage-link-target"><span>Kurdî</span></a></li><li class="interlanguage-link interwiki-kv mw-list-item"><a href="https://kv.wikipedia.org/wiki/7_(%D1%81%D0%B8%D0%B7%D0%B8%D0%BC)" title="7 (сизим) – 科米语" lang="kv" hreflang="kv" data-title="7 (сизим)" data-language-autonym="Коми" data-language-local-name="科米语" class="interlanguage-link-target"><span>Коми</span></a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Septem" title="Septem – 拉丁语" lang="la" hreflang="la" data-title="Septem" data-language-autonym="Latina" data-language-local-name="拉丁语" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-lb mw-list-item"><a href="https://lb.wikipedia.org/wiki/Siwen" title="Siwen – 卢森堡语" lang="lb" hreflang="lb" data-title="Siwen" data-language-autonym="Lëtzebuergesch" data-language-local-name="卢森堡语" class="interlanguage-link-target"><span>Lëtzebuergesch</span></a></li><li class="interlanguage-link interwiki-lbe mw-list-item"><a href="https://lbe.wikipedia.org/wiki/%D0%90%D1%80%D1%83%D0%BB%D0%B2%D0%B0" title="Арулва – Lak" lang="lbe" hreflang="lbe" data-title="Арулва" data-language-autonym="Лакку" data-language-local-name="Lak" class="interlanguage-link-target"><span>Лакку</span></a></li><li class="interlanguage-link interwiki-lg mw-list-item"><a href="https://lg.wikipedia.org/wiki/Musanvu" title="Musanvu – 卢干达语" lang="lg" hreflang="lg" data-title="Musanvu" data-language-autonym="Luganda" data-language-local-name="卢干达语" class="interlanguage-link-target"><span>Luganda</span></a></li><li class="interlanguage-link interwiki-li mw-list-item"><a href="https://li.wikipedia.org/wiki/Zeuve" title="Zeuve – 林堡语" lang="li" hreflang="li" data-title="Zeuve" data-language-autonym="Limburgs" data-language-local-name="林堡语" class="interlanguage-link-target"><span>Limburgs</span></a></li><li class="interlanguage-link interwiki-lmo mw-list-item"><a href="https://lmo.wikipedia.org/wiki/N%C3%BCmar_7" title="Nümar 7 – 伦巴第语" lang="lmo" hreflang="lmo" data-title="Nümar 7" data-language-autonym="Lombard" data-language-local-name="伦巴第语" class="interlanguage-link-target"><span>Lombard</span></a></li><li class="interlanguage-link interwiki-ln mw-list-item"><a href="https://ln.wikipedia.org/wiki/7_(motuya)" title="7 (motuya) – 林加拉语" lang="ln" hreflang="ln" data-title="7 (motuya)" data-language-autonym="Lingála" data-language-local-name="林加拉语" class="interlanguage-link-target"><span>Lingála</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/7_(skai%C4%8Dius)" title="7 (skaičius) – 立陶宛语" lang="lt" hreflang="lt" data-title="7 (skaičius)" data-language-autonym="Lietuvių" data-language-local-name="立陶宛语" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/7_(skaitlis)" title="7 (skaitlis) – 拉脱维亚语" lang="lv" hreflang="lv" data-title="7 (skaitlis)" data-language-autonym="Latviešu" data-language-local-name="拉脱维亚语" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/7_(%D0%B1%D1%80%D0%BE%D1%98)" title="7 (број) – 马其顿语" lang="mk" hreflang="mk" data-title="7 (број)" data-language-autonym="Македонски" data-language-local-name="马其顿语" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/7_(%E0%B4%85%E0%B4%95%E0%B5%8D%E0%B4%95%E0%B4%82)" title="7 (അക്കം) – 马拉雅拉姆语" lang="ml" hreflang="ml" data-title="7 (അക്കം)" data-language-autonym="മലയാളം" data-language-local-name="马拉雅拉姆语" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-mni mw-list-item"><a href="https://mni.wikipedia.org/wiki/%EA%AF%B7" title="꯷ – 曼尼普尔语" lang="mni" hreflang="mni" data-title="꯷" data-language-autonym="ꯃꯤꯇꯩ ꯂꯣꯟ" data-language-local-name="曼尼普尔语" class="interlanguage-link-target"><span>ꯃꯤꯇꯩ ꯂꯣꯟ</span></a></li><li class="interlanguage-link interwiki-mr mw-list-item"><a href="https://mr.wikipedia.org/wiki/%E0%A5%AD_(%E0%A4%B8%E0%A4%82%E0%A4%96%E0%A5%8D%E0%A4%AF%E0%A4%BE)" title="७ (संख्या) – 马拉地语" lang="mr" hreflang="mr" data-title="७ (संख्या)" data-language-autonym="मराठी" data-language-local-name="马拉地语" class="interlanguage-link-target"><span>मराठी</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/7_(nombor)" title="7 (nombor) – 马来语" lang="ms" hreflang="ms" data-title="7 (nombor)" data-language-autonym="Bahasa Melayu" data-language-local-name="马来语" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-myv mw-list-item"><a href="https://myv.wikipedia.org/wiki/7_(%D0%BB%D0%BE%D0%B2%D0%BE%D0%BC%D0%B0_%D0%B2%D0%B0%D0%BB)" title="7 (ловома вал) – 厄尔兹亚语" lang="myv" hreflang="myv" data-title="7 (ловома вал)" data-language-autonym="Эрзянь" data-language-local-name="厄尔兹亚语" class="interlanguage-link-target"><span>Эрзянь</span></a></li><li class="interlanguage-link interwiki-mzn mw-list-item"><a href="https://mzn.wikipedia.org/wiki/%DB%B7_(%D8%B9%D8%AF%D8%AF)" title="۷ (عدد) – 马赞德兰语" lang="mzn" hreflang="mzn" data-title="۷ (عدد)" data-language-autonym="مازِرونی" data-language-local-name="马赞德兰语" class="interlanguage-link-target"><span>مازِرونی</span></a></li><li class="interlanguage-link interwiki-nah mw-list-item"><a href="https://nah.wikipedia.org/wiki/Chicome" title="Chicome – Nahuatl" lang="nah" hreflang="nah" data-title="Chicome" data-language-autonym="Nāhuatl" data-language-local-name="Nahuatl" class="interlanguage-link-target"><span>Nāhuatl</span></a></li><li class="interlanguage-link interwiki-nap mw-list-item"><a href="https://nap.wikipedia.org/wiki/Sette" title="Sette – 那不勒斯语" lang="nap" hreflang="nap" data-title="Sette" data-language-autonym="Napulitano" data-language-local-name="那不勒斯语" class="interlanguage-link-target"><span>Napulitano</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/7_(getal)" title="7 (getal) – 荷兰语" lang="nl" hreflang="nl" data-title="7 (getal)" data-language-autonym="Nederlands" data-language-local-name="荷兰语" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Talet_7" title="Talet 7 – 挪威尼诺斯克语" lang="nn" hreflang="nn" data-title="Talet 7" data-language-autonym="Norsk nynorsk" data-language-local-name="挪威尼诺斯克语" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/7_(tall)" title="7 (tall) – 书面挪威语" lang="nb" hreflang="nb" data-title="7 (tall)" data-language-autonym="Norsk bokmål" data-language-local-name="书面挪威语" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-nso mw-list-item"><a href="https://nso.wikipedia.org/wiki/7_(nomoro)" title="7 (nomoro) – 北索托语" lang="nso" hreflang="nso" data-title="7 (nomoro)" data-language-autonym="Sesotho sa Leboa" data-language-local-name="北索托语" class="interlanguage-link-target"><span>Sesotho sa Leboa</span></a></li><li class="interlanguage-link interwiki-om mw-list-item"><a href="https://om.wikipedia.org/wiki/Torba" title="Torba – 奥罗莫语" lang="om" hreflang="om" data-title="Torba" data-language-autonym="Oromoo" data-language-local-name="奥罗莫语" class="interlanguage-link-target"><span>Oromoo</span></a></li><li class="interlanguage-link interwiki-or mw-list-item"><a href="https://or.wikipedia.org/wiki/%E0%AD%AD_(%E0%AC%B8%E0%AC%82%E0%AC%96%E0%AD%8D%E0%AD%9F%E0%AC%BE)" title="୭ (ସଂଖ୍ୟା) – 奥里亚语" lang="or" hreflang="or" data-title="୭ (ସଂଖ୍ୟା)" data-language-autonym="ଓଡ଼ିଆ" data-language-local-name="奥里亚语" class="interlanguage-link-target"><span>ଓଡ଼ିଆ</span></a></li><li class="interlanguage-link interwiki-pa mw-list-item"><a href="https://pa.wikipedia.org/wiki/7" title="7 – 旁遮普语" lang="pa" hreflang="pa" data-title="7" data-language-autonym="ਪੰਜਾਬੀ" data-language-local-name="旁遮普语" class="interlanguage-link-target"><span>ਪੰਜਾਬੀ</span></a></li><li class="interlanguage-link interwiki-pdc mw-list-item"><a href="https://pdc.wikipedia.org/wiki/Siwwe" title="Siwwe – 賓夕法尼亞德文" lang="pdc" hreflang="pdc" data-title="Siwwe" data-language-autonym="Deitsch" data-language-local-name="賓夕法尼亞德文" class="interlanguage-link-target"><span>Deitsch</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/7_(liczba)" title="7 (liczba) – 波兰语" lang="pl" hreflang="pl" data-title="7 (liczba)" data-language-autonym="Polski" data-language-local-name="波兰语" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pnb mw-list-item"><a href="https://pnb.wikipedia.org/wiki/7" title="7 – Western Punjabi" lang="pnb" hreflang="pnb" data-title="7" data-language-autonym="پنجابی" data-language-local-name="Western Punjabi" class="interlanguage-link-target"><span>پنجابی</span></a></li><li class="interlanguage-link interwiki-ps mw-list-item"><a href="https://ps.wikipedia.org/wiki/%DB%B7" title="۷ – 普什图语" lang="ps" hreflang="ps" data-title="۷" data-language-autonym="پښتو" data-language-local-name="普什图语" class="interlanguage-link-target"><span>پښتو</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Sete" title="Sete – 葡萄牙语" lang="pt" hreflang="pt" data-title="Sete" data-language-autonym="Português" data-language-local-name="葡萄牙语" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-qu mw-list-item"><a href="https://qu.wikipedia.org/wiki/Qanchis" title="Qanchis – 克丘亚语" lang="qu" hreflang="qu" data-title="Qanchis" data-language-autonym="Runa Simi" data-language-local-name="克丘亚语" class="interlanguage-link-target"><span>Runa Simi</span></a></li><li class="interlanguage-link interwiki-rn mw-list-item"><a href="https://rn.wikipedia.org/wiki/Indwi" title="Indwi – 隆迪语" lang="rn" hreflang="rn" data-title="Indwi" data-language-autonym="Ikirundi" data-language-local-name="隆迪语" class="interlanguage-link-target"><span>Ikirundi</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/7_(cifr%C4%83)" title="7 (cifră) – 罗马尼亚语" lang="ro" hreflang="ro" data-title="7 (cifră)" data-language-autonym="Română" data-language-local-name="罗马尼亚语" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/7_(%D1%87%D0%B8%D1%81%D0%BB%D0%BE)" title="7 (число) – 俄语" lang="ru" hreflang="ru" data-title="7 (число)" data-language-autonym="Русский" data-language-local-name="俄语" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sat mw-list-item"><a href="https://sat.wikipedia.org/wiki/%E1%B1%97" title="᱗ – 桑塔利语" lang="sat" hreflang="sat" data-title="᱗" data-language-autonym="ᱥᱟᱱᱛᱟᱲᱤ" data-language-local-name="桑塔利语" class="interlanguage-link-target"><span>ᱥᱟᱱᱛᱟᱲᱤ</span></a></li><li class="interlanguage-link interwiki-scn mw-list-item"><a href="https://scn.wikipedia.org/wiki/Setti" title="Setti – 西西里语" lang="scn" hreflang="scn" data-title="Setti" data-language-autonym="Sicilianu" data-language-local-name="西西里语" class="interlanguage-link-target"><span>Sicilianu</span></a></li><li class="interlanguage-link interwiki-sco mw-list-item"><a href="https://sco.wikipedia.org/wiki/7_(nummer)" title="7 (nummer) – 苏格兰语" lang="sco" hreflang="sco" data-title="7 (nummer)" data-language-autonym="Scots" data-language-local-name="苏格兰语" class="interlanguage-link-target"><span>Scots</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/7_(broj)" title="7 (broj) – 塞尔维亚-克罗地亚语" lang="sh" hreflang="sh" data-title="7 (broj)" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="塞尔维亚-克罗地亚语" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-shi mw-list-item"><a href="https://shi.wikipedia.org/wiki/Sa" title="Sa – 希尔哈语" lang="shi" hreflang="shi" data-title="Sa" data-language-autonym="Taclḥit" data-language-local-name="希尔哈语" class="interlanguage-link-target"><span>Taclḥit</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/7_(number)" title="7 (number) – Simple English" lang="en-simple" hreflang="en-simple" data-title="7 (number)" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/7_(%C4%8D%C3%ADslo)" title="7 (číslo) – 斯洛伐克语" lang="sk" hreflang="sk" data-title="7 (číslo)" data-language-autonym="Slovenčina" data-language-local-name="斯洛伐克语" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/7_(%C5%A1tevilo)" title="7 (število) – 斯洛文尼亚语" lang="sl" hreflang="sl" data-title="7 (število)" data-language-autonym="Slovenščina" data-language-local-name="斯洛文尼亚语" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sm mw-list-item"><a href="https://sm.wikipedia.org/wiki/7_(numera)" title="7 (numera) – 萨摩亚语" lang="sm" hreflang="sm" data-title="7 (numera)" data-language-autonym="Gagana Samoa" data-language-local-name="萨摩亚语" class="interlanguage-link-target"><span>Gagana Samoa</span></a></li><li class="interlanguage-link interwiki-sn mw-list-item"><a href="https://sn.wikipedia.org/wiki/Nomwe" title="Nomwe – 绍纳语" lang="sn" hreflang="sn" data-title="Nomwe" data-language-autonym="ChiShona" data-language-local-name="绍纳语" class="interlanguage-link-target"><span>ChiShona</span></a></li><li class="interlanguage-link interwiki-so mw-list-item"><a href="https://so.wikipedia.org/wiki/7_(thiin)" title="7 (thiin) – 索马里语" lang="so" hreflang="so" data-title="7 (thiin)" data-language-autonym="Soomaaliga" data-language-local-name="索马里语" class="interlanguage-link-target"><span>Soomaaliga</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Shtat%C3%AB_(7)" title="Shtatë (7) – 阿尔巴尼亚语" lang="sq" hreflang="sq" data-title="Shtatë (7)" data-language-autonym="Shqip" data-language-local-name="阿尔巴尼亚语" class="interlanguage-link-target"><span>Shqip</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/7_(%D0%B1%D1%80%D0%BE%D1%98)" title="7 (број) – 塞尔维亚语" lang="sr" hreflang="sr" data-title="7 (број)" data-language-autonym="Српски / srpski" data-language-local-name="塞尔维亚语" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-srn mw-list-item"><a href="https://srn.wikipedia.org/wiki/Numro_7" title="Numro 7 – 苏里南汤加语" lang="srn" hreflang="srn" data-title="Numro 7" data-language-autonym="Sranantongo" data-language-local-name="苏里南汤加语" class="interlanguage-link-target"><span>Sranantongo</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/7_(tal)" title="7 (tal) – 瑞典语" lang="sv" hreflang="sv" data-title="7 (tal)" data-language-autonym="Svenska" data-language-local-name="瑞典语" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-sw mw-list-item"><a href="https://sw.wikipedia.org/wiki/Saba_(namba)" title="Saba (namba) – 斯瓦希里语" lang="sw" hreflang="sw" data-title="Saba (namba)" data-language-autonym="Kiswahili" data-language-local-name="斯瓦希里语" class="interlanguage-link-target"><span>Kiswahili</span></a></li><li class="interlanguage-link interwiki-szl mw-list-item"><a href="https://szl.wikipedia.org/wiki/7_(n%C5%AFmera)" title="7 (nůmera) – 西里西亚语" lang="szl" hreflang="szl" data-title="7 (nůmera)" data-language-autonym="Ślůnski" data-language-local-name="西里西亚语" class="interlanguage-link-target"><span>Ślůnski</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/7_(%E0%AE%8E%E0%AE%A3%E0%AF%8D)" title="7 (எண்) – 泰米尔语" lang="ta" hreflang="ta" data-title="7 (எண்)" data-language-autonym="தமிழ்" data-language-local-name="泰米尔语" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-te mw-list-item"><a href="https://te.wikipedia.org/wiki/%E0%B0%8F%E0%B0%A1%E0%B1%81" title="ఏడు – 泰卢固语" lang="te" hreflang="te" data-title="ఏడు" data-language-autonym="తెలుగు" data-language-local-name="泰卢固语" class="interlanguage-link-target"><span>తెలుగు</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/7" title="7 – 泰语" lang="th" hreflang="th" data-title="7" data-language-autonym="ไทย" data-language-local-name="泰语" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-ti mw-list-item"><a href="https://ti.wikipedia.org/wiki/%E1%88%B8%E1%8B%8D%E1%8B%93%E1%89%B0" title="ሸውዓተ – 提格利尼亚语" lang="ti" hreflang="ti" data-title="ሸውዓተ" data-language-autonym="ትግርኛ" data-language-local-name="提格利尼亚语" class="interlanguage-link-target"><span>ትግርኛ</span></a></li><li class="interlanguage-link interwiki-tk mw-list-item"><a href="https://tk.wikipedia.org/wiki/7_(san)" title="7 (san) – 土库曼语" lang="tk" hreflang="tk" data-title="7 (san)" data-language-autonym="Türkmençe" data-language-local-name="土库曼语" class="interlanguage-link-target"><span>Türkmençe</span></a></li><li class="interlanguage-link interwiki-tl mw-list-item"><a href="https://tl.wikipedia.org/wiki/7_(bilang)" title="7 (bilang) – 他加禄语" lang="tl" hreflang="tl" data-title="7 (bilang)" data-language-autonym="Tagalog" data-language-local-name="他加禄语" class="interlanguage-link-target"><span>Tagalog</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/7_(say%C4%B1)" title="7 (sayı) – 土耳其语" lang="tr" hreflang="tr" data-title="7 (sayı)" data-language-autonym="Türkçe" data-language-local-name="土耳其语" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-ts mw-list-item"><a href="https://ts.wikipedia.org/wiki/Nkombo" title="Nkombo – 聪加语" lang="ts" hreflang="ts" data-title="Nkombo" data-language-autonym="Xitsonga" data-language-local-name="聪加语" class="interlanguage-link-target"><span>Xitsonga</span></a></li><li class="interlanguage-link interwiki-tt mw-list-item"><a href="https://tt.wikipedia.org/wiki/7_(%D1%81%D0%B0%D0%BD)" title="7 (сан) – 鞑靼语" lang="tt" hreflang="tt" data-title="7 (сан)" data-language-autonym="Татарча / tatarça" data-language-local-name="鞑靼语" class="interlanguage-link-target"><span>Татарча / tatarça</span></a></li><li class="interlanguage-link interwiki-tum mw-list-item"><a href="https://tum.wikipedia.org/wiki/Vikhondi_na_tubili" title="Vikhondi na tubili – 通布卡语" lang="tum" hreflang="tum" data-title="Vikhondi na tubili" data-language-autonym="ChiTumbuka" data-language-local-name="通布卡语" class="interlanguage-link-target"><span>ChiTumbuka</span></a></li><li class="interlanguage-link interwiki-tyv mw-list-item"><a href="https://tyv.wikipedia.org/wiki/7" title="7 – 图瓦语" lang="tyv" hreflang="tyv" data-title="7" data-language-autonym="Тыва дыл" data-language-local-name="图瓦语" class="interlanguage-link-target"><span>Тыва дыл</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/7_(%D1%87%D0%B8%D1%81%D0%BB%D0%BE)" title="7 (число) – 乌克兰语" lang="uk" hreflang="uk" data-title="7 (число)" data-language-autonym="Українська" data-language-local-name="乌克兰语" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-ur mw-list-item"><a href="https://ur.wikipedia.org/wiki/7_(%D8%B9%D8%AF%D8%AF)" title="7 (عدد) – 乌尔都语" lang="ur" hreflang="ur" data-title="7 (عدد)" data-language-autonym="اردو" data-language-local-name="乌尔都语" class="interlanguage-link-target"><span>اردو</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/7_(son)" title="7 (son) – 乌兹别克语" lang="uz" hreflang="uz" data-title="7 (son)" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="乌兹别克语" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-ve mw-list-item"><a href="https://ve.wikipedia.org/wiki/%E1%B9%B0hanu_na_mbili" title="Ṱhanu na mbili – 文达语" lang="ve" hreflang="ve" data-title="Ṱhanu na mbili" data-language-autonym="Tshivenda" data-language-local-name="文达语" class="interlanguage-link-target"><span>Tshivenda</span></a></li><li class="interlanguage-link interwiki-vep mw-list-item"><a href="https://vep.wikipedia.org/wiki/7_(lugu)" title="7 (lugu) – 维普森语" lang="vep" hreflang="vep" data-title="7 (lugu)" data-language-autonym="Vepsän kel’" data-language-local-name="维普森语" class="interlanguage-link-target"><span>Vepsän kel’</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/7_(s%E1%BB%91)" title="7 (số) – 越南语" lang="vi" hreflang="vi" data-title="7 (số)" data-language-autonym="Tiếng Việt" data-language-local-name="越南语" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-vls mw-list-item"><a href="https://vls.wikipedia.org/wiki/7_(getal)" title="7 (getal) – 西佛蘭德文" lang="vls" hreflang="vls" data-title="7 (getal)" data-language-autonym="West-Vlams" data-language-local-name="西佛蘭德文" class="interlanguage-link-target"><span>West-Vlams</span></a></li><li class="interlanguage-link interwiki-war mw-list-item"><a href="https://war.wikipedia.org/wiki/7_(ihap)" title="7 (ihap) – 瓦瑞语" lang="war" hreflang="war" data-title="7 (ihap)" data-language-autonym="Winaray" data-language-local-name="瓦瑞语" class="interlanguage-link-target"><span>Winaray</span></a></li><li class="interlanguage-link interwiki-wo mw-list-item"><a href="https://wo.wikipedia.org/wiki/Jur%C3%B3om_%C3%B1aar" title="Juróom ñaar – 沃洛夫语" lang="wo" hreflang="wo" data-title="Juróom ñaar" data-language-autonym="Wolof" data-language-local-name="沃洛夫语" class="interlanguage-link-target"><span>Wolof</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/7" title="7 – 吴语" lang="wuu" hreflang="wuu" data-title="7" data-language-autonym="吴语" data-language-local-name="吴语" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-xh mw-list-item"><a href="https://xh.wikipedia.org/wiki/Sixhenxe" title="Sixhenxe – 科萨语" lang="xh" hreflang="xh" data-title="Sixhenxe" data-language-autonym="IsiXhosa" data-language-local-name="科萨语" class="interlanguage-link-target"><span>IsiXhosa</span></a></li><li class="interlanguage-link interwiki-xmf mw-list-item"><a href="https://xmf.wikipedia.org/wiki/%E1%83%A8%E1%83%99%E1%83%95%E1%83%98%E1%83%97%E1%83%98" title="შკვითი – 明格列爾文" lang="xmf" hreflang="xmf" data-title="შკვითი" data-language-autonym="მარგალური" data-language-local-name="明格列爾文" class="interlanguage-link-target"><span>მარგალური</span></a></li><li class="interlanguage-link interwiki-yi mw-list-item"><a href="https://yi.wikipedia.org/wiki/7_(%D7%A0%D7%95%D7%9E%D7%A2%D7%A8)" title="7 (נומער) – 意第绪语" lang="yi" hreflang="yi" data-title="7 (נומער)" data-language-autonym="ייִדיש" data-language-local-name="意第绪语" class="interlanguage-link-target"><span>ייִדיש</span></a></li><li class="interlanguage-link interwiki-za mw-list-item"><a href="https://za.wikipedia.org/wiki/7" title="7 – 壮语" lang="za" hreflang="za" data-title="7" data-language-autonym="Vahcuengh" data-language-local-name="壮语" class="interlanguage-link-target"><span>Vahcuengh</span></a></li><li class="interlanguage-link interwiki-zgh mw-list-item"><a href="https://zgh.wikipedia.org/wiki/7_(%E2%B4%B0%E2%B5%8E%E2%B4%B9%E2%B4%B0%E2%B5%8F)" title="7 (ⴰⵎⴹⴰⵏ) – 标准摩洛哥塔马塞特语" lang="zgh" hreflang="zgh" data-title="7 (ⴰⵎⴹⴰⵏ)" data-language-autonym="ⵜⴰⵎⴰⵣⵉⵖⵜ ⵜⴰⵏⴰⵡⴰⵢⵜ" data-language-local-name="标准摩洛哥塔马塞特语" class="interlanguage-link-target"><span>ⵜⴰⵎⴰⵣⵉⵖⵜ ⵜⴰⵏⴰⵡⴰⵢⵜ</span></a></li><li class="interlanguage-link interwiki-zh-classical mw-list-item"><a href="https://zh-classical.wikipedia.org/wiki/%E4%B8%83" title="七 – 文言文" lang="lzh" hreflang="lzh" data-title="七" data-language-autonym="文言" data-language-local-name="文言文" class="interlanguage-link-target"><span>文言</span></a></li><li class="interlanguage-link interwiki-zh-min-nan mw-list-item"><a href="https://zh-min-nan.wikipedia.org/wiki/7" title="7 – 闽南语" lang="nan" hreflang="nan" data-title="7" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="闽南语" class="interlanguage-link-target"><span>閩南語 / Bân-lâm-gú</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/7" title="7 – 粤语" lang="yue" hreflang="yue" data-title="7" data-language-autonym="粵語" data-language-local-name="粤语" class="interlanguage-link-target"><span>粵語</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q23350#sitelinks-wikipedia" title="编辑跨语言链接" class="wbc-editpage">编辑链接</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="命名空间"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/7" title="浏览条目正文[c]" accesskey="c"><span>条目</span></a></li><li id="ca-talk" class="vector-tab-noicon mw-list-item"><a href="/wiki/Talk:7" rel="discussion" title="关于此页面的讨论[t]" accesskey="t"><span>讨论</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown " > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" 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mw-portlet-tb" > <div class="vector-menu-heading"> 常规 </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Special:%E9%93%BE%E5%85%A5%E9%A1%B5%E9%9D%A2/7" title="列出所有与本页相链的页面[j]" accesskey="j"><span>链入页面</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Special:%E9%93%BE%E5%87%BA%E6%9B%B4%E6%94%B9/7" rel="nofollow" title="页面链出所有页面的更改[k]" accesskey="k"><span>相关更改</span></a></li><li id="t-upload" class="mw-list-item"><a href="//zh.wikipedia.org/wiki/Project:上传" title="上传图像或多媒体文件[u]" accesskey="u"><span>上传文件</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=7&oldid=85903993" title="此页面该修订版本的固定链接"><span>固定链接</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=7&action=info" title="关于此页面的更多信息"><span>页面信息</span></a></li><li id="t-cite" class="mw-list-item"><a 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id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="zh" dir="ltr"><style data-mw-deduplicate="TemplateStyles:r85100532">.mw-parser-output .hatnote{font-size:small}.mw-parser-output div.hatnote{padding-left:2em;margin-bottom:0.8em;margin-top:0.8em}.mw-parser-output .hatnote-notice-img::after{content:"\202f \202f \202f \202f "}.mw-parser-output .hatnote-notice-img-small::after{content:"\202f \202f "}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}body.skin-minerva .mw-parser-output .hatnote-notice-img,body.skin-minerva .mw-parser-output .hatnote-notice-img-small{display:none}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable"><span class="noviewer hatnote-notice-img" typeof="mw:File"><a href="/wiki/Wikipedia:%E6%B6%88%E6%AD%A7%E4%B9%89" title="Wikipedia:消歧义"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/5f/Disambig_gray.svg/40px-Disambig_gray.svg.png" decoding="async" width="25" height="19" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/5f/Disambig_gray.svg/60px-Disambig_gray.svg.png 2x" data-file-width="220" data-file-height="168" /></a></span>「<b>七</b>」和「<b>柒</b>」均重定向至此。关于其他用法，请见「<b><a href="/wiki/7_(%E6%B6%88%E6%AD%A7%E4%B9%89)" class="mw-disambig" title="7 (消歧义)">7 (消歧义)</a></b>」。</div> <div id="noteTA-307af9e9" class="noteTA"><div class="noteTA-group"><div data-noteta-group-source="module" data-noteta-group="Math"></div></div></div> <style data-mw-deduplicate="TemplateStyles:r67735281">body.skin-minerva .mw-parser-output .infobox table{display:table}body.skin-minerva .mw-parser-output .infobox caption{display:table-caption}</style><style data-mw-deduplicate="TemplateStyles:r83732082">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}body.skin-minerva .mw-parser-output .infobox-header,body.skin-minerva .mw-parser-output .infobox-subheader,body.skin-minerva .mw-parser-output .infobox-above,body.skin-minerva .mw-parser-output .infobox-title,body.skin-minerva .mw-parser-output .infobox-image,body.skin-minerva .mw-parser-output .infobox-full-data,body.skin-minerva .mw-parser-output .infobox-below{text-align:center}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}html.skin-theme-clientpref-night .mw-parser-output .infobox td div:not(.notheme)[style]{background:transparent!important;color:var(--color-base,#202122)}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox td div:not(.notheme)[style]{background:transparent!important;color:var(--color-base,#202122)}}html.skin-theme-clientpref-night .mw-parser-output .infobox td div.NavHead:not(.notheme)[style]{background:transparent!important}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox td div.NavHead:not(.notheme)[style]{background:transparent!important}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox" style="line-height: 1.5em"><caption class="infobox-title"><style data-mw-deduplicate="TemplateStyles:r85009877">.mw-parser-output .hvanchor>:target~.hvanchor-text{display:initial}.mw-parser-output .hvanchor>:target~.svanchor-text,.mw-parser-output .hvanchor>:target~.svanchor-text .anchor-high-light,.mw-parser-output .hvanchor>:target~.hvanchor-text .anchor-high-light{background-color:#b1d2ff}.mw-parser-output .hvanchor-text{display:none}.mw-parser-output .hvanchor>:target~.ihvanchor-text{display:none}.mw-parser-output .ihvanchor-text{display:initial}</style><span class="hvanchor"><span class="anchor" id="7資料"></span><span class="anchor" id="7資料"></span><span class="svanchor-text">7</span><span class="hvanchor-text"></span></span></caption><tbody><tr><th colspan="2" class="infobox-above" style="font-size: 150%"><table style="width:100%; margin:0"><tbody><tr> <td style="width:15%; text-align:left; white-space: nowrap; font-size:smaller"><a href="/wiki/6" title="6">← 6 </a></td> <td style="width:70%; padding-left:1em; padding-right:1em; text-align: center;">7</td> <td style="width:15%; text-align:right; white-space: nowrap; font-size:smaller"><a href="/wiki/8" title="8"> 8 →</a></td> </tr></tbody></table></th></tr><tr><td colspan="2" class="infobox-subheader" style="font-size:100%;"><table style="width:100%; margin:0;"><tbody><tr style="align:center;white-space:nowrap;"> <td><a href="/wiki/%E6%95%B0%E8%A1%A8" class="mw-redirect" title="数表">数表</a> — <a href="/wiki/%E6%95%B4%E6%95%B0" title="整数">整数</a> <div style="text−align: center;"> <p><small> <a href="/wiki/%E2%88%921" title="−1"><<</a>  <a href="/wiki/0" title="0">0</a> <a href="/wiki/1" title="1">1</a> <a href="/wiki/2" title="2">2</a> <a href="/wiki/3" title="3">3</a> <a href="/wiki/4" title="4">4</a> <a href="/wiki/5" title="5">5</a> <a href="/wiki/6" title="6">6</a> <a class="mw-selflink selflink">7</a> <a href="/wiki/8" title="8">8</a> <a href="/wiki/9" title="9">9</a> <a href="/wiki/10" title="10">>></a> </small> </p> </div></td> </tr></tbody></table></td></tr><tr><th colspan="2" class="infobox-header" style="">命名</th></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E4%B8%AD%E6%96%87%E6%95%B8%E5%AD%97" class="mw-redirect" title="中文數字">小寫</a></th><td class="infobox-data" style="">七</td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E4%B8%AD%E6%96%87%E6%95%B8%E5%AD%97" class="mw-redirect" title="中文數字">大寫</a></th><td class="infobox-data" style="">柒</td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E5%BA%8F%E6%95%B8%E8%A9%9E" title="序數詞">序數詞</a></th><td class="infobox-data" style="">第七<br />seventh</td></tr><tr><th colspan="2" class="infobox-header" style="">識別</th></tr><tr><th scope="row" class="infobox-label" style="">種類</th><td class="infobox-data" style="">整數</td></tr><tr><th colspan="2" class="infobox-header" style="">性質</th></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E8%B3%AA%E6%95%B8" class="mw-redirect" title="質數">質數</a></th><td class="infobox-data" style="">第4個<br /><a href="/wiki/5" title="5">5</a> - <b>7</b> - <a href="/wiki/11" title="11">11</a></td></tr><tr><th scope="row" class="infobox-label" style=""><span class="nowrap"><a href="/wiki/%E8%B3%AA%E5%9B%A0%E6%95%B8%E5%88%86%E8%A7%A3" class="mw-redirect" title="質因數分解">質因數分解</a></span></th><td class="infobox-data" style="">（<a href="/wiki/%E7%B4%A0%E6%95%B0" class="mw-redirect" title="素数">素数</a>）</td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E5%9B%A0%E6%95%B8" title="因數">因數</a></th><td class="infobox-data" style="">1、7</td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E7%9B%B8%E5%8F%8D%E6%95%B0" class="mw-redirect" title="相反数">相反数</a></th><td class="infobox-data" style=""><a href="/wiki/%E2%88%927" class="mw-redirect" title="−7">−7</a></td></tr><tr><th colspan="2" class="infobox-header" style="">表示方式</th></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E5%80%BC" title="值">值</a></th><td class="infobox-data" style="">7</td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E8%8B%8F%E5%B7%9E%E7%A0%81%E5%AD%90" title="苏州码子">花码</a></th><td class="infobox-data" style="">〧</td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E7%AE%97%E7%AD%B9" title="算筹">算筹</a></th><td class="infobox-data" style=""><span class="mw-default-size" typeof="mw:File"><a href="/wiki/File:Counting_rod_v7.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/d/d1/Counting_rod_v7.png" decoding="async" width="29" height="32" class="mw-file-element" data-file-width="29" data-file-height="32" /></a></span></td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E5%B8%8C%E8%85%8A%E6%95%B0%E5%AD%97" title="希腊数字">希腊数字</a></th><td class="infobox-data" style=""><span title="希臘語文本"><span lang="el">Ζ´</span></span></td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E7%BE%85%E9%A6%AC%E6%95%B8%E5%AD%97" class="mw-redirect" title="羅馬數字">羅馬數字</a></th><td class="infobox-data" style=""><style data-mw-deduplicate="TemplateStyles:r75010853">.mw-parser-output .roman-numeral{font-family:"Nimbus Roman No9 L","Times New Roman",Times,serif;font-size:118%;line-height:1}.mw-parser-output .roman-numeral-a{border:1px solid}.mw-parser-output .roman-numeral-t{border-top:1px solid}.mw-parser-output .roman-numeral-v{border:solid;border-width:0 1px;padding:0 2px}.mw-parser-output .roman-numeral-h{border:solid;border-width:1px 0}.mw-parser-output .roman-numeral-tv{border:1px solid;border-bottom:none;padding:0 2px}</style><span class="roman-numeral" title="Roman numeral">Ⅶ<br />ⅡⅨ</span></td></tr><tr><td colspan="2" class="infobox-full-data" style=""></td></tr><tr><th><a href="/wiki/%E6%91%A9%E5%B0%94%E6%96%AF%E7%94%B5%E7%A0%81" title="摩尔斯电码">摩尔斯电码</a></th><td>--...<span style="float:right"><span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q23350?uselang=zh#Q23350$e7e78acd-44aa-8d6e-5414-b6ea7fb47a8b" title="在维基数据编辑"><img alt="在维基数据编辑" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></td></tr><tr><th><a href="/wiki/%E7%8E%9B%E9%9B%85%E6%95%B0%E5%AD%97" title="玛雅数字">玛雅数字</a></th><td><span typeof="mw:File"><a href="/wiki/File:Maya_7.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/85/Maya_7.svg/30px-Maya_7.svg.png" decoding="async" width="30" height="30" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/85/Maya_7.svg/45px-Maya_7.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/85/Maya_7.svg/60px-Maya_7.svg.png 2x" data-file-width="450" data-file-height="450" /></a></span><span style="float:right"><span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q23350?uselang=zh#Q23350$AE7F5EEE-30C7-40B1-A383-27E144A09249" title="在维基数据编辑"><img alt="在维基数据编辑" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></td></tr><tr style="display:none"><td colspan="2"> </td></tr><tr><td colspan="2" class="infobox-full-data" style=""></td></tr><tr><th><a href="/wiki/%E4%B8%80%E8%BF%9B%E5%88%B6" title="一进制">一进制</a></th><td>1111111<sub>(1)</sub></td></tr><tr><th><a href="/wiki/%E4%BA%8C%E8%BF%9B%E5%88%B6" title="二进制">二进制</a></th><td>111<sub>(2)</sub></td></tr><tr><th><a href="/wiki/%E4%B8%89%E8%BF%9B%E5%88%B6" title="三进制">三进制</a></th><td>21<sub>(3)</sub></td></tr><tr><th><a href="/wiki/%E5%9B%9B%E8%BF%9B%E5%88%B6" class="mw-redirect" title="四进制">四进制</a></th><td>13<sub>(4)</sub></td></tr><tr><th><a href="/wiki/%E4%BA%94%E9%80%B2%E5%88%B6" title="五進制">五进制</a></th><td>12<sub>(5)</sub></td></tr><tr><th><a href="/wiki/%E5%85%AB%E8%BF%9B%E5%88%B6" title="八进制">八进制</a></th><td>7<sub>(8)</sub></td></tr><tr><th><a href="/wiki/%E5%8D%81%E4%BA%8C%E8%BF%9B%E5%88%B6" title="十二进制">十二进制</a></th><td>7<sub>(12)</sub></td></tr><tr><th><a href="/wiki/%E5%8D%81%E5%85%AD%E8%BF%9B%E5%88%B6" title="十六进制">十六进制</a></th><td>7<sub>(16)</sub></td></tr><tr style="display:none"><td colspan="2"> </td></tr><tr><th colspan="2" class="infobox-header" style="">語言</th></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E5%B8%8C%E8%85%8A%E8%AF%AD" title="希腊语">希腊语</a><a href="/wiki/%E6%95%B0%E5%AD%97%E5%89%8D%E7%BC%80" title="数字前缀">前缀</a></th><td class="infobox-data" style=""><a href="https://zh.wiktionary.org/wiki/hepta-" class="extiw" title="wikt:hepta-">hepta-</a>/<a href="https://zh.wiktionary.org/wiki/hept-" class="extiw" title="wikt:hept-">hept-</a></td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E6%8B%89%E4%B8%81%E8%AA%9E" class="mw-redirect" title="拉丁語">拉丁語</a><a href="/wiki/%E6%95%B0%E5%AD%97%E5%89%8D%E7%BC%80" title="数字前缀">前缀</a></th><td class="infobox-data" style=""><a href="https://zh.wiktionary.org/wiki/septua-" class="extiw" title="wikt:septua-">septua-</a></td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E8%8B%B1%E8%AA%9E" class="mw-redirect" title="英語">英語</a></th><td class="infobox-data" style="">seven</td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E5%B8%8C%E8%85%8A%E6%95%B0%E5%AD%97" title="希腊数字">希臘語</a></th><td class="infobox-data" style=""><a href="/wiki/%CE%96" title="Ζ">Z</a>、 ζ</td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E9%98%BF%E5%A7%86%E5%93%88%E6%8B%89%E8%AF%AD" title="阿姆哈拉语">阿姆哈拉语</a></th><td class="infobox-data" style="">፯</td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E9%98%BF%E6%8B%89%E4%BC%AF%E6%96%87%E6%95%B0%E5%AD%97" title="阿拉伯文数字">阿拉伯文</a>、 <a href="/wiki/%E4%B8%AD%E5%BA%93%E5%B0%94%E5%BE%B7%E8%AF%AD" title="中库尔德语">中库尔德语</a>、 <a href="/wiki/%E6%B3%A2%E6%96%AF%E8%AF%AD" title="波斯语">波斯语</a></th><td class="infobox-data" style=""><span style="font-size:150%;">٧</span></td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E4%BF%A1%E5%BE%B7%E8%AF%AD" title="信德语">信德语</a>、 <span class="ilh-all" data-orig-title="印度斯坦语数字" data-lang-code="en" data-lang-name="英语" data-foreign-title="Urdu numerals"><span class="ilh-page"><a href="/w/index.php?title=%E5%8D%B0%E5%BA%A6%E6%96%AF%E5%9D%A6%E8%AF%AD%E6%95%B0%E5%AD%97&action=edit&redlink=1" class="new" title="印度斯坦语数字（页面不存在）">印度斯坦语</a></span><span class="noprint ilh-comment"><span class="ilh-paren">（</span><span class="ilh-lang">英语</span><span class="ilh-colon">：</span><span class="ilh-link"><a href="https://en.wikipedia.org/wiki/Urdu_numerals" class="extiw" title="en:Urdu numerals"><span lang="en" dir="auto">Urdu numerals</span></a></span><span class="ilh-paren">）</span></span></span></th><td class="infobox-data" style=""><span style="font-size:150%;"><span title="烏爾都語文本"><span lang="ur" dir="rtl">۷</span></span></span></td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E5%AD%9F%E5%8A%A0%E6%8B%89%E8%AF%AD" title="孟加拉语">孟加拉语</a></th><td class="infobox-data" style=""><span style="font-size:150%;">৭</span></td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E5%A4%A9%E5%9F%8E%E6%96%87" title="天城文">天城文</a></th><td class="infobox-data" style=""><span style="font-size:150%;">७</span></td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E6%B3%B0%E5%8D%A2%E5%9B%BA%E8%AF%AD" title="泰卢固语">泰卢固语</a></th><td class="infobox-data" style=""><span style="font-size:150%;">౭</span></td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E6%B3%B0%E7%B1%B3%E5%B0%94%E8%AF%AD" title="泰米尔语">泰米尔语</a></th><td class="infobox-data" style=""><span style="font-size:150%;">௭</span></td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E5%B8%8C%E4%BC%AF%E6%9D%A5%E8%AF%AD" title="希伯来语">希伯来语</a></th><td class="infobox-data" style=""><span style="font-size:150%;">ז</span></td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E9%AB%98%E6%A3%89%E6%95%B8%E5%AD%97" title="高棉數字">高棉數字</a></th><td class="infobox-data" style="">៧</td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E6%B3%B0%E6%96%87%E6%95%B0%E5%AD%97" title="泰文数字">泰文</a></th><td class="infobox-data" style="">๗</td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E5%8D%A1%E7%BA%B3%E8%BE%BE%E8%AF%AD" title="卡纳达语">卡纳达语</a></th><td class="infobox-data" style=""><span style="font-size:150%;">೭</span></td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E9%A9%AC%E6%8B%89%E9%9B%85%E6%8B%89%E5%A7%86%E8%AF%AD" title="马拉雅拉姆语">马拉雅拉姆语</a></th><td class="infobox-data" style="">൭</td></tr><tr><td colspan="2" class="infobox-navbar"><style data-mw-deduplicate="TemplateStyles:r84265675">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol ol,.mw-parser-output .hlist ol ul,.mw-parser-output .hlist ul dl,.mw-parser-output .hlist ul ol,.mw-parser-output .hlist ul ul{display:inline}.mw-parser-output .hlist .mw-empty-li{display:none}.mw-parser-output .hlist dt::after{content:" :"}.mw-parser-output .hlist dd::after,.mw-parser-output .hlist li::after{content:" · ";font-weight:bold}.mw-parser-output .hlist-pipe dd::after,.mw-parser-output .hlist-pipe li::after{content:" | ";font-weight:normal}.mw-parser-output .hlist-hyphen dd::after,.mw-parser-output .hlist-hyphen li::after{content:" - ";font-weight:normal}.mw-parser-output .hlist-comma dd::after,.mw-parser-output .hlist-comma li::after{content:"、";font-weight:normal}.mw-parser-output .hlist dd:last-child::after,.mw-parser-output .hlist dt:last-child::after,.mw-parser-output .hlist li:last-child::after{content:none}.mw-parser-output .hlist ol{counter-reset:listitem}.mw-parser-output .hlist ol>li{counter-increment:listitem}.mw-parser-output .hlist ol>li::before{content:" "counter(listitem)"\a0 "}.mw-parser-output .hlist dd ol>li:first-child::before,.mw-parser-output .hlist dt ol>li:first-child::before,.mw-parser-output .hlist li ol>li:first-child::before{content:"（"counter(listitem)"\a0 "}.mw-parser-output ul.cslist,.mw-parser-output ul.sslist{margin:0;padding:0;display:inline-block;list-style:none}.mw-parser-output .cslist li,.mw-parser-output .sslist li{margin:0;display:inline-block}.mw-parser-output .cslist li::after{content:"，"}.mw-parser-output .sslist li::after{content:"；"}.mw-parser-output .cslist li:last-child::after,.mw-parser-output .sslist li:last-child::after{content:none}</style><style data-mw-deduplicate="TemplateStyles:r84244141">.mw-parser-output .navbar{display:inline;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:110%;margin:0 8em}.mw-parser-output .navbar-ct-mini{font-size:110%;margin:0 5em}html.skin-theme-clientpref-night .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:%E6%95%B4%E6%95%B0" title="Template:整数"><abbr title="查看该模板">查</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:%E6%95%B4%E6%95%B0" title="Template talk:整数"><abbr title="讨论该模板">论</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:%E7%BC%96%E8%BE%91%E9%A1%B5%E9%9D%A2/Template:%E6%95%B4%E6%95%B0" title="Special:编辑页面/Template:整数"><abbr title="编辑该模板">编</abbr></a></li></ul></div></td></tr></tbody></table> <p><b>7</b>（七）是<a href="/wiki/6" title="6">6</a>与<a href="/wiki/8" title="8">8</a>之间的<a href="/wiki/%E8%87%AA%E7%84%B6%E6%95%B0" title="自然数">自然数</a>。 </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="数学性质"><span id=".E6.95.B0.E5.AD.A6.E6.80.A7.E8.B4.A8"></span>数学性质</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=7&action=edit&section=1" title="编辑章节：数学性质"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>第4個<a href="/wiki/%E7%B4%A0%E6%95%B0" class="mw-redirect" title="素数">質數</a>。前一個為<a href="/wiki/5" title="5">5</a>、下一個為<a href="/wiki/11" title="11">11</a>。 <ul><li>第2对<a href="/wiki/%E5%AD%AA%E7%94%9F%E7%B4%A0%E6%95%B0" title="孪生素数">孿生質數</a>之一，其為（<a href="/wiki/5" title="5">5</a>、 7）。</li> <li>第4个<a href="/wiki/%E9%98%B6%E4%B9%98%E7%B4%A0%E6%95%B0" title="阶乘素数">阶乘素数</a>（<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 3!+1}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mn>3</mn> <mo>!</mo> <mo>+</mo> <mn>1</mn> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 3!+1}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/a77f84e31c32a327e38107c5ecf34471f640d45e" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.505ex; width:5.812ex; height:2.343ex;" alt="{\displaystyle 3!+1}" /></span>）。前一個是<a href="/wiki/5" title="5">5</a>、下一個是<a href="/wiki/23" title="23">23</a>。</li> <li>第2个<a href="/wiki/%E8%83%A1%E9%81%93%E5%B0%94%E7%B4%A0%E6%95%B0" class="mw-redirect" title="胡道尔素数">胡道尔素数</a></li> <li>第2个<a href="/wiki/%E5%B9%B8%E8%BF%90%E7%B4%A0%E6%95%B0" class="mw-redirect" title="幸运素数">幸运素数</a></li> <li>第4個<a href="/wiki/%E9%99%B3%E8%B3%AA%E6%95%B8" class="mw-redirect" title="陳質數">陳質數</a>（<a href="/wiki/%E9%99%88%E7%B4%A0%E6%95%B0" title="陈素数">陈素数</a>）</li> <li>第3個<a href="/wiki/%E7%93%A6%E6%A0%BC%E6%96%AF%E5%A1%94%E5%A4%AB%E8%B3%AA%E6%95%B8" title="瓦格斯塔夫質數">瓦格斯塔夫質數</a></li> <li><a href="/wiki/%E5%8D%81%E9%80%B2%E5%88%B6" class="mw-redirect" title="十進制">十進制</a>下，既是<a href="/wiki/%E5%8F%AF%E6%88%AA%E7%9F%AD%E8%B3%AA%E6%95%B8" title="可截短質數">可右截短質數</a>，也是可左截短質數</li> <li>十進制下的<a href="/wiki/%E5%8F%AF%E4%BA%A4%E6%8F%9B%E8%B3%AA%E6%95%B8" class="mw-redirect" title="可交換質數">可交換質數</a></li> <li>第2個<a href="/wiki/%E6%A2%85%E6%A3%AE%E7%B4%A0%E6%95%B0" title="梅森素数">梅森質數</a>（<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 2^{3}-1}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msup> <mn>2</mn> <mrow class="MJX-TeXAtom-ORD"> <mn>3</mn> </mrow> </msup> <mo>−</mo> <mn>1</mn> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 2^{3}-1}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/d6344f50177ad0db5a2d6dd3443136df3e9f3cb7" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.505ex; width:6.22ex; height:2.843ex;" alt="{\displaystyle 2^{3}-1}" /></span>），對應的<a href="/wiki/%E5%AE%8C%E5%85%A8%E6%95%B8" class="mw-redirect" title="完全數">完全數</a>為<a href="/wiki/28" title="28">28</a>，<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 2^{2}\left(2^{3}-1\right)}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msup> <mn>2</mn> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> <mrow> <mo>(</mo> <mrow> <msup> <mn>2</mn> <mrow class="MJX-TeXAtom-ORD"> <mn>3</mn> </mrow> </msup> <mo>−</mo> <mn>1</mn> </mrow> <mo>)</mo> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 2^{2}\left(2^{3}-1\right)}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/629bd3ef9fd555bb8e5a1ab3d98634ec9b2f01c4" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -1.005ex; width:10.953ex; height:3.343ex;" alt="{\displaystyle 2^{2}\left(2^{3}-1\right)}" /></span>。前一個為<a href="/wiki/3" title="3">3</a>、下一個為<a href="/wiki/31" title="31">31</a>。</li> <li><a href="/wiki/%E9%AB%98%E6%96%AF%E6%95%B4%E6%95%B8#作为唯一分解整环" title="高斯整數">高斯質數</a>之一。</li></ul></li> <li>第6個<a href="/wiki/%E4%BA%8F%E6%95%B0" title="亏数">虧數</a>，<a href="/wiki/%E7%9C%9F%E5%9B%A0%E6%95%B8%E5%92%8C" title="真因數和">真因數和</a>為1，虧度為6。前一個為<a href="/wiki/5" title="5">5</a>、下一個為<a href="/wiki/8" title="8">8</a>。</li> <li>第5個<a href="/wiki/%E4%B8%8D%E5%B0%8B%E5%B8%B8%E6%95%B8" title="不尋常數">不尋常數</a>，大於平方根的質因數為7。前一個為<a href="/wiki/6" title="6">6</a>、下一個為<a href="/wiki/10" title="10">10</a>。</li> <li>第6個<a href="/wiki/%E6%97%A0%E5%B9%B3%E6%96%B9%E6%95%B0%E5%9B%A0%E6%95%B0%E7%9A%84%E6%95%B0" class="mw-redirect" title="无平方数因数的数">無平方數因數的數</a>。前一個為<a href="/wiki/6" title="6">6</a>、下一個為<a href="/wiki/10" title="10">10</a>。</li> <li>第4個<a href="/wiki/%E5%8D%81%E8%BF%9B%E5%88%B6" title="十进制">十进制</a>的<a href="/wiki/%E8%87%AA%E6%88%91%E6%95%B0" title="自我数">自我數</a>。前一個為<a href="/wiki/5" title="5">5</a>、下一個為<a href="/wiki/9" title="9">9</a>。</li> <li>第7個<a href="/wiki/%E5%8D%81%E8%BF%9B%E5%88%B6" title="十进制">十进制</a>的<a href="/wiki/%E5%93%88%E6%B2%99%E5%BE%B7%E6%95%B8" title="哈沙德數">哈沙德數</a>。前一個為<a href="/wiki/6" title="6">6</a>、下一個為<a href="/wiki/8" title="8">8</a>。</li> <li>第5個<a href="/wiki/%E5%8D%81%E8%BF%9B%E5%88%B6" title="十进制">十进制</a>的<a href="/wiki/%E7%AD%89%E6%95%B8%E4%BD%8D%E6%95%B8" title="等數位數">等數位數</a>。前一個為<a href="/wiki/5" title="5">5</a>、下一個為<a href="/wiki/10" title="10">10</a>。</li> <li>第2个<a href="/wiki/%E5%BF%AB%E6%A8%82%E6%95%B8" title="快樂數">快樂數</a></li> <li>999,999除以7刚好是<a href="/wiki/142857" title="142857">142,857</a>，以7为<a href="/wiki/%E5%88%86%E6%AF%8D" class="mw-redirect" title="分母">分母</a>的<a href="/wiki/%E7%9C%9F%E5%88%86%E6%95%B0" class="mw-redirect" title="真分数">真分数</a>的<a href="/wiki/%E5%BE%AA%E7%92%B0%E7%AF%80" class="mw-redirect" title="循環節">循环节</a>为该六个数字的不同顺序。</li></ul> <dl><dd><ul><li><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 1/7=0.142857142...}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mn>1</mn> <mrow class="MJX-TeXAtom-ORD"> <mo>/</mo> </mrow> <mn>7</mn> <mo>=</mo> <mn>0.142857142...</mn> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 1/7=0.142857142...}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/6bd6fbb3092781a352b5e2af19d0213b7cce67be" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:20.798ex; height:2.843ex;" alt="{\displaystyle 1/7=0.142857142...}" /></span></li> <li><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 2/7=0.285714285...}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mn>2</mn> <mrow class="MJX-TeXAtom-ORD"> <mo>/</mo> </mrow> <mn>7</mn> <mo>=</mo> <mn>0.285714285...</mn> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 2/7=0.285714285...}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/cd0690c67221289d7cf0148d9e7d8ccfaa30aaea" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:20.798ex; height:2.843ex;" alt="{\displaystyle 2/7=0.285714285...}" /></span></li> <li><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 3/7=0.428571428...}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mn>3</mn> <mrow class="MJX-TeXAtom-ORD"> <mo>/</mo> </mrow> <mn>7</mn> <mo>=</mo> <mn>0.428571428...</mn> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 3/7=0.428571428...}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/305de3329af52141d69a0e9d22c5226e6688fa83" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:20.798ex; height:2.843ex;" alt="{\displaystyle 3/7=0.428571428...}" /></span></li> <li><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 4/7=0.571428571...}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mn>4</mn> <mrow class="MJX-TeXAtom-ORD"> <mo>/</mo> </mrow> <mn>7</mn> <mo>=</mo> <mn>0.571428571...</mn> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 4/7=0.571428571...}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/0a2f7ea6e9515d306ae5b34046bddf7c0b053188" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:20.798ex; height:2.843ex;" alt="{\displaystyle 4/7=0.571428571...}" /></span></li> <li><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 5/7=0.714285714...}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mn>5</mn> <mrow class="MJX-TeXAtom-ORD"> <mo>/</mo> </mrow> <mn>7</mn> <mo>=</mo> <mn>0.714285714...</mn> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 5/7=0.714285714...}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/5400a0a0fbb0bfbf1063784d22c30e66954dcd14" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:20.798ex; height:2.843ex;" alt="{\displaystyle 5/7=0.714285714...}" /></span></li> <li><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 6/7=0.857142857...}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mn>6</mn> <mrow class="MJX-TeXAtom-ORD"> <mo>/</mo> </mrow> <mn>7</mn> <mo>=</mo> <mn>0.857142857...</mn> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 6/7=0.857142857...}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/eca679d619240a8878326094ff7b44f84a75ad44" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:20.798ex; height:2.843ex;" alt="{\displaystyle 6/7=0.857142857...}" /></span></li></ul></dd></dl> <ul><li>若某數之末位的二倍與剩餘數字的差為7的<a href="/wiki/%E5%80%8D%E6%95%B8" title="倍數">倍數</a>，則某數為7的倍數。 <dl><dd>例如：336133，一開始<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {{33613}-{{2}\times {3}}}=33607}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <mn>33613</mn> </mrow> <mo>−</mo> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> <mo>×</mo> <mrow class="MJX-TeXAtom-ORD"> <mn>3</mn> </mrow> </mrow> </mrow> <mo>=</mo> <mn>33607</mn> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {{33613}-{{2}\times {3}}}=33607}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/0eb4eaaf5b875aea1bb541e4607fbfaa8105375a" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.505ex; width:22.729ex; height:2.343ex;" alt="{\displaystyle {{33613}-{{2}\times {3}}}=33607}" /></span>，然後<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {{3360}-{{2}\times {7}}}=3346}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <mn>3360</mn> </mrow> <mo>−</mo> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> <mo>×</mo> <mrow class="MJX-TeXAtom-ORD"> <mn>7</mn> </mrow> </mrow> </mrow> <mo>=</mo> <mn>3346</mn> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {{3360}-{{2}\times {7}}}=3346}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/f99655c598bdd431b69364259f536fe3d35e2030" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.505ex; width:20.404ex; height:2.343ex;" alt="{\displaystyle {{3360}-{{2}\times {7}}}=3346}" /></span>，接著<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {{334}-{{2}\times {6}}}=322}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <mn>334</mn> </mrow> <mo>−</mo> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> <mo>×</mo> <mrow class="MJX-TeXAtom-ORD"> <mn>6</mn> </mrow> </mrow> </mrow> <mo>=</mo> <mn>322</mn> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {{334}-{{2}\times {6}}}=322}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/027f25e9388fe2074b8b29a199664e0966dc4619" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.505ex; width:18.079ex; height:2.343ex;" alt="{\displaystyle {{334}-{{2}\times {6}}}=322}" /></span>，最後<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {{32}-{{2}\times {2}}}=28}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <mn>32</mn> </mrow> <mo>−</mo> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> <mo>×</mo> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </mrow> </mrow> <mo>=</mo> <mn>28</mn> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {{32}-{{2}\times {2}}}=28}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/6d647bba9542ad8c6f185ece94a73cef79718b5b" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.505ex; width:15.754ex; height:2.343ex;" alt="{\displaystyle {{32}-{{2}\times {2}}}=28}" /></span>為7的倍數，故336133為7的倍數。</dd></dl></li> <li><a href="/wiki/%E6%AD%A3%E4%B8%89%E8%A7%92%E5%BD%A2" title="正三角形">正三边形</a>、<a href="/wiki/%E6%AD%A3%E5%9B%9B%E8%BE%B9%E5%BD%A2" class="mw-redirect" title="正四边形">正四边形</a>、<a href="/wiki/%E6%AD%A3%E4%BA%94%E8%BE%B9%E5%BD%A2" class="mw-redirect" title="正五边形">正五边形</a>、<a href="/wiki/%E6%AD%A3%E5%85%AD%E8%BE%B9%E5%BD%A2" class="mw-redirect" title="正六边形">正六边形</a>均可以以<a href="/wiki/%E5%B0%BA%E8%A7%84%E4%BD%9C%E5%9B%BE" title="尺规作图">尺规作图</a>的方式画出，但<a href="/wiki/%E6%AD%A3%E4%B8%83%E8%BE%B9%E5%BD%A2" class="mw-redirect" title="正七边形">正七边形</a>卻不可。</li> <li><a href="/wiki/%E8%A5%BF%E7%88%BE%E7%B6%AD%E6%96%AF%E7%89%B9%E6%95%B8%E5%88%97" title="西爾維斯特數列">西爾維斯特數列</a>的第3項</li> <li><a href="/w/index.php?title=Frieze%E7%BE%A4&action=edit&redlink=1" class="new" title="Frieze群（页面不存在）">Frieze群</a>有七種</li> <li><a href="/wiki/%E4%B8%83%E7%BB%B4%E7%A9%BA%E9%97%B4" title="七维空间">7維空間</a>是除了<a href="/wiki/%E4%B8%89%E7%B6%AD%E7%A9%BA%E9%96%93" title="三維空間">3維空間</a>外唯一能定義二元<a href="/wiki/%E5%8F%89%E7%A9%8D" class="mw-redirect" title="叉積">叉積</a>的空間<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>，參見<a href="/wiki/%E4%B8%83%E7%BB%B4%E5%8F%89%E7%A7%AF" title="七维叉积">七維叉積</a>。</li> <li><a href="/wiki/%E4%BD%A9%E8%98%AD%E6%95%B8%E5%88%97" title="佩蘭數列">佩蘭數列</a>的第8項</li></ul> <div class="mw-heading mw-heading3"><h3 id="基本运算"><span id=".E5.9F.BA.E6.9C.AC.E8.BF.90.E7.AE.97"></span>基本运算</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=7&action=edit&section=2" title="编辑章节：基本运算"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <table class="wikitable"> <tbody><tr> <th><a href="/wiki/%E4%B9%98%E6%B3%95" title="乘法">乘法</a> </th> <th>1 </th> <th>2 </th> <th>3 </th> <th>4 </th> <th>5 </th> <th>6 </th> <th>7 </th> <th>8 </th> <th>9 </th> <th>10 </th> <th width="5px"> </th> <th>11 </th> <th>12 </th> <th>13 </th> <th>14 </th> <th>15 </th> <th>16 </th> <th>17 </th> <th>18 </th> <th>19 </th> <th>20 </th> <th width="5px"> </th> <th>21 </th> <th>22 </th> <th>23 </th> <th>24 </th> <th>25 </th> <th width="5px"> </th> <th>50 </th> <th>100 </th> <th>1000 </th></tr> <tr> <th><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {{7}\times {x}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <mn>7</mn> </mrow> <mo>×</mo> <mrow class="MJX-TeXAtom-ORD"> <mi>x</mi> </mrow> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {{7}\times {x}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/bd65f61e055f363ff651235ba2cb73555caa8867" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:5.333ex; height:2.176ex;" alt="{\displaystyle {{7}\times {x}}}" /></span> </th> <td><a class="mw-selflink selflink">7</a> </td> <td><a href="/wiki/14" title="14">14</a> </td> <td><a href="/wiki/21" title="21">21</a> </td> <td><a href="/wiki/28" title="28">28</a> </td> <td><a href="/wiki/35" title="35">35</a> </td> <td><a href="/wiki/42" title="42">42</a> </td> <td><a href="/wiki/49" title="49">49</a> </td> <td><a href="/wiki/56" title="56">56</a> </td> <td><a href="/wiki/63" title="63">63</a> </td> <td><a href="/wiki/70" title="70">70</a> </td> <th width="5px"> </th> <td><a href="/wiki/77" title="77">77</a> </td> <td><a href="/wiki/84" title="84">84</a> </td> <td><a href="/wiki/91" title="91">91</a> </td> <td><a href="/wiki/98" title="98">98</a> </td> <td><a href="/wiki/105" title="105">105</a> </td> <td><a href="/wiki/112" title="112">112</a> </td> <td><a href="/wiki/119" title="119">119</a> </td> <td><a href="/wiki/126" title="126">126</a> </td> <td><a href="/wiki/133" title="133">133</a> </td> <td><a href="/wiki/140" title="140">140</a> </td> <th width="5px"> </th> <td><a href="/wiki/147" title="147">147</a> </td> <td><a href="/wiki/154" title="154">154</a> </td> <td><a href="/wiki/161" title="161">161</a> </td> <td><a href="/wiki/168" title="168">168</a> </td> <td><a href="/wiki/175" title="175">175</a> </td> <th width="5px"> </th> <td><a href="/wiki/350" title="350">350</a> </td> <td><a href="/wiki/700" title="700">700</a> </td> <td><a href="/wiki/7000" title="7000">7000</a> </td></tr></tbody></table> <table class="wikitable" style="text-align: center; background: white;"> <tbody><tr> <th width="105px" rowspan="2"><a href="/wiki/%E9%99%A4%E6%B3%95" title="除法">除法</a> </th> <th>1 </th> <th>2 </th> <th>3 </th> <th>4 </th> <th>5 </th> <th>6 </th> <th>7 </th> <th>8 </th> <th>9 </th> <th>10 </th></tr> <tr> <th>11 </th> <th>12 </th> <th>13 </th> <th>14 </th> <th>15 </th> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td></tr> <tr> <td rowspan="2">7 ÷ <i>x</i> </td> <td><b>7</b> </td> <td><a href="/wiki/3" title="3">3</a>.<a href="/wiki/5" title="5">5</a> </td> <td>2.<span style="text-decoration:overline">3</span> </td> <td><a href="/wiki/1" title="1">1</a>.<a href="/wiki/75" title="75">75</a> </td> <td>1.<a href="/wiki/4" title="4">4</a> </td> <td>1.1<span style="text-decoration:overline">6</span> </td> <td>1 </td> <td><a href="/wiki/0" title="0">0</a>.875 </td> <td>0.<span style="text-decoration:overline">7</span> </td> <td>0.7 </td></tr> <tr> <td>0.<span style="text-decoration:overline">63</span> </td> <td>0.58<span style="text-decoration:overline">3</span> </td> <td>0.<span style="text-decoration:overline">538461</span> </td> <td>0.5 </td> <td>0.4<span style="text-decoration:overline">6</span> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td></tr> <tr> <td rowspan="2"><i>x</i> ÷ 7 </td> <td>0.<span style="text-decoration:overline">142857</span> </td> <td>0.<span style="text-decoration:overline">285714</span> </td> <td>0.<span style="text-decoration:overline">428571</span> </td> <td>0.<span style="text-decoration:overline">571428</span> </td> <td>0.<span style="text-decoration:overline">714285</span> </td> <td>0.<span style="text-decoration:overline">857142</span> </td> <td>1 </td> <td>1.<span style="text-decoration:overline">142857</span> </td> <td>1.<span style="text-decoration:overline">285714</span> </td> <td>1.<span style="text-decoration:overline">428571</span> </td></tr> <tr> <td>1.<span style="text-decoration:overline">571428</span> </td> <td>1.<span style="text-decoration:overline">714285</span> </td> <td>1.<span style="text-decoration:overline">857142</span> </td> <td><a href="/wiki/2" title="2">2</a> </td> <td>2.<span style="text-decoration:overline">142857</span> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td></tr></tbody></table> <table class="wikitable"> <tbody><tr> <th><a href="/wiki/%E4%B9%98%E6%96%B9" class="mw-redirect" title="乘方">乘方</a> </th> <th>1 </th> <th>2 </th> <th>3 </th> <th>4 </th> <th>5 </th> <th>6 </th> <th>7 </th> <th>8 </th> <th>9 </th> <th>10 </th> <th width="5px"> </th> <th>11 </th> <th>12 </th> <th>13 </th></tr> <tr> <th><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {{7}^{x}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <msup> <mrow class="MJX-TeXAtom-ORD"> <mn>7</mn> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mi>x</mi> </mrow> </msup> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {{7}^{x}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/3654810df952eb80205faa4fd3c3b9c1de289b2d" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:2.335ex; height:2.343ex;" alt="{\displaystyle {{7}^{x}}}" /></span> </th> <td><a class="mw-selflink selflink">7</a> </td> <td><a href="/wiki/49" title="49">49</a> </td> <td>343 </td> <td>2401 </td> <td>16807 </td> <td>117649 </td> <td>823543 </td> <td>5764801 </td> <td>40353607 </td> <td>282475249 </td> <th width="5px"> </th> <td>1977326743 </td> <td>13841287201 </td> <td>96889010407 </td></tr> <tr> <th><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {{x}^{7}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <msup> <mrow class="MJX-TeXAtom-ORD"> <mi>x</mi> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mn>7</mn> </mrow> </msup> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {{x}^{7}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/7398c25956abc4ea3f3a23707a3d45b67dac624d" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:2.384ex; height:2.676ex;" alt="{\displaystyle {{x}^{7}}}" /></span> </th> <td><a href="/wiki/1" title="1">1</a> </td> <td><a href="/wiki/128" title="128">128</a> </td> <td>2187 </td> <td>16384 </td> <td>78125 </td> <td>279936 </td> <td>823543 </td> <td>2097152 </td> <td>4782969 </td> <td>10000000 </td> <th width="5px"> </th> <td>19487171 </td> <td>35831808 </td> <td>62748517 </td></tr></tbody></table> <table class="wikitable" style="text-align: center; background: white;"> <tbody><tr> <th rowspan="2" width="105px"><a href="/wiki/Radix" class="mw-disambig" title="Radix">Radix</a> </th> <th>1 </th> <th>5 </th> <th>10 </th> <th>15 </th> <th>20 </th> <th>25 </th> <th>30 </th> <th>40 </th> <th>50 </th> <th>60 </th> <th>70 </th> <th>80 </th> <th>90 </th> <th>100 </th></tr> <tr> <th>110 </th> <th>120 </th> <th>130 </th> <th>140 </th> <th>150 </th> <th>200 </th> <th>250 </th> <th>500 </th> <th>1000 </th> <th>10000 </th> <th>100000 </th> <th>1000000 </th> <td> </td> <td> </td></tr> <tr> <td rowspan="2"><i>x</i><sub>7</sub> </td> <td>1 </td> <td>5 </td> <td>13<sub>7</sub> </td> <td>21<sub>7</sub> </td> <td>26<sub>7</sub> </td> <td>34<sub>7</sub> </td> <td>42<sub>7</sub> </td> <td>55<sub>7</sub> </td> <td>101<sub>7</sub> </td> <td>114<sub>7</sub> </td> <td>130<sub>7</sub> </td> <td>143<sub>7</sub> </td> <td>156<sub>7</sub> </td> <td>202<sub>7</sub> </td></tr> <tr> <td>215<sub>7</sub> </td> <td>231<sub>7</sub> </td> <td>244<sub>7</sub> </td> <td>260<sub>7</sub> </td> <td>303<sub>7</sub> </td> <td>404<sub>7</sub> </td> <td>505<sub>7</sub> </td> <td>1313<sub>7</sub> </td> <td>2626<sub>7</sub> </td> <td>41104<sub>7</sub> </td> <td>564355<sub>7</sub> </td> <td>11333311<sub>7</sub> </td> <td> </td></tr></tbody></table> <div class="mw-heading mw-heading2"><h2 id="在科学中"><span id=".E5.9C.A8.E7.A7.91.E5.AD.A6.E4.B8.AD"></span>在科学中</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=7&action=edit&section=3" title="编辑章节：在科学中"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>在<a href="/wiki/%E9%85%B8%E7%A2%B1%E5%BA%A6" class="mw-redirect" title="酸碱度">酸碱度</a>中，中性的<a href="/wiki/PH" class="mw-redirect" title="PH">pH</a>为7</li> <li><a href="/wiki/%E6%B0%AE" title="氮">氮</a>的<a href="/wiki/%E5%8E%9F%E5%AD%90%E5%BA%8F%E6%95%B8" class="mw-redirect" title="原子序數">原子序數</a>。<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/%E5%8C%97%E6%96%97%E4%B8%83%E6%98%9F" title="北斗七星">北斗七星</a>主要由七颗<a href="/w/index.php?title=%E4%BA%AE%E6%98%9F&action=edit&redlink=1" class="new" title="亮星（页面不存在）">亮星</a>组成。</li> <li><a href="/wiki/%E5%BD%A9%E8%99%B9" title="彩虹">彩虹</a>經常被分為七種顏色：<style data-mw-deduplicate="TemplateStyles:r84565780">.mw-parser-output .legend{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .legend-color{display:inline-block;min-width:1.25em;height:1.25em;line-height:1.25;margin:1px 0;text-align:center;border:1px solid var(--border-color-notice,black);color:inherit}.mw-parser-output .legend-color-styled{display:inline-block;min-width:1.25em;height:1.25em;line-height:1.25;margin:1px 0;text-align:center;border:1px solid var(--border-color-notice,black);color:inherit}.mw-parser-output .legend-text{}</style><span class="legend-color" style="background-color:#FF0000; color:black;border:1px solid darkgray;"> </span><a href="/wiki/%E7%B4%85%E8%89%B2" class="mw-redirect" title="紅色">紅</a>、<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r84565780" /><span class="legend-color" style="background-color:#FF8000; color:black;border:1px solid darkgray;"> </span><a href="/wiki/%E6%A9%99%E8%89%B2" title="橙色">橙</a>、<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r84565780" /><span class="legend-color" style="background-color:#FFFF00; color:black;border:1px solid darkgray;"> </span><a href="/wiki/%E9%BB%83%E8%89%B2" class="mw-redirect" title="黃色">黃</a>、<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r84565780" /><span class="legend-color" style="background-color:#00FF00; color:black;border:1px solid darkgray;"> </span><a href="/wiki/%E7%B6%A0%E8%89%B2" title="綠色">綠</a>、<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r84565780" /><span class="legend-color" style="background-color:#1793F5; color:black;border:1px solid darkgray;"> </span><a href="/wiki/%E8%93%9D%E8%89%B2" class="mw-redirect" title="蓝色">蓝</a>、<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r84565780" /><span class="legend-color" style="background-color:#2F07A8; color:white;border:1px solid darkgray;"> </span><a href="/wiki/%E9%9D%9B%E8%89%B2" class="mw-redirect" title="靛色">靛</a>、<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r84565780" /><span class="legend-color" style="background-color:#7325B6; color:white;border:1px solid darkgray;"> </span><a href="/wiki/%E7%B4%AB%E8%89%B2" title="紫色">紫</a><sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>。</li> <li><a href="/wiki/%E7%94%9F%E7%89%A9%E7%95%8C" class="mw-redirect" title="生物界">生物界</a>分為七個等级：<a href="/wiki/%E7%95%8C_(%E7%94%9F%E7%89%A9)" title="界 (生物)">界</a>、<a href="/wiki/%E9%97%A8_(%E7%94%9F%E7%89%A9)" title="门 (生物)">门</a>、<a href="/wiki/%E7%BA%B2" title="纲">纲</a>、<a href="/wiki/%E7%9B%AE_(%E7%94%9F%E7%89%A9)" title="目 (生物)">目</a>、<a href="/wiki/%E7%A7%91_(%E7%94%9F%E7%89%A9)" title="科 (生物)">科</a>、<a href="/wiki/%E5%B1%9E" title="属">属</a>、<a href="/wiki/%E7%89%A9%E7%A7%8D" title="物种">种</a>。</li> <li><a href="/wiki/%E9%94%82" title="锂">锂</a>的原子量为7。</li></ul> <div class="mw-heading mw-heading2"><h2 id="在體育中"><span id=".E5.9C.A8.E9.AB.94.E8.82.B2.E4.B8.AD"></span>在體育中</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=7&action=edit&section=4" title="编辑章节：在體育中"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>在<a href="/wiki/%E6%A3%92%E7%90%83" title="棒球">棒球</a>中，7是<a href="/wiki/%E5%B7%A6%E5%A4%96%E9%87%8E%E6%89%8B" title="左外野手">左外野手</a>的代號。</li></ul> <div class="mw-heading mw-heading2"><h2 id="在人類文化中"><span id=".E5.9C.A8.E4.BA.BA.E9.A1.9E.E6.96.87.E5.8C.96.E4.B8.AD"></span>在人類文化中</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=7&action=edit&section=5" title="编辑章节：在人類文化中"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>《<a href="/wiki/%E5%8D%8E%E7%9B%9B%E9%A1%BF%E6%B5%B7%E5%86%9B%E6%9D%A1%E7%BA%A6" title="华盛顿海军条约">華盛頓海軍條約</a>》簽訂前，裝備了16寸炮的七艘<a href="/wiki/%E6%88%B0%E8%89%A6" title="戰艦">戰艦</a>：<a href="/wiki/%E7%A7%91%E7%BE%85%E6%8B%89%E5%A4%9A%E8%99%9F%E6%88%B0%E8%89%A6" title="科羅拉多號戰艦">科羅拉多號戰艦</a>、<a href="/wiki/%E9%A6%AC%E9%87%8C%E8%98%AD%E8%99%9F%E6%88%B0%E8%89%A6" class="mw-redirect" title="馬里蘭號戰艦">馬里蘭號戰艦</a>、<a href="/wiki/%E8%A5%BF%E7%B6%AD%E5%90%89%E5%B0%BC%E4%BA%9E%E8%99%9F%E6%88%B0%E8%89%A6" class="mw-redirect" title="西維吉尼亞號戰艦">西維吉尼亞號戰艦</a>、<a href="/wiki/%E7%B4%8D%E7%88%BE%E9%81%9C%E8%99%9F%E6%88%B0%E8%89%A6" title="納爾遜號戰艦">納爾遜號戰艦</a>、<a href="/wiki/%E7%BE%85%E5%BE%B7%E5%B0%BC%E8%99%9F%E6%88%B0%E8%89%A6" title="羅德尼號戰艦">羅德尼號戰艦</a>、<a href="/wiki/%E9%95%B7%E9%96%80%E8%99%9F%E6%88%B0%E8%89%A6" title="長門號戰艦">長門號戰艦</a>、<a href="/wiki/%E9%99%B8%E5%A5%A7%E8%99%9F%E6%88%B0%E8%89%A6" title="陸奧號戰艦">陸奥號戰艦</a>，被稱為七大戰艦（Big seven）。</li> <li>在<a href="/wiki/%E5%9F%BA%E7%9D%A3%E6%95%99" title="基督教">基督教</a>及<a href="/wiki/%E7%8C%B6%E5%A4%AA%E6%95%99" class="mw-redirect" title="猶太教">猶太教</a>信仰中，上帝用6天創造世界，第7天休息。</li> <li>目前通用曆法中的<a href="/wiki/%E4%B8%80%E9%80%B1" class="mw-redirect" title="一週">一週</a>亦為7天，<a href="/wiki/%E6%98%9F%E6%9C%9F%E6%97%A5" title="星期日">星期日</a>一般被定为<a href="/wiki/%E5%85%AC%E7%9C%BE%E5%81%87%E6%9C%9F" class="mw-redirect" title="公眾假期">公眾假期</a>。</li> <li>在西方文化中，7普遍被視為幸運數字，而有Lucky 7的說法。</li> <li>西方古典音樂有7個音階，受到<a href="/wiki/%E7%95%A2%E9%81%94%E5%93%A5%E6%8B%89%E6%96%AF" class="mw-redirect" title="畢達哥拉斯">畢達哥拉斯</a>學派的重視。</li> <li>在<a href="/wiki/%E6%A8%82%E7%90%86" title="樂理">樂理</a>中，<a href="/wiki/%E7%B0%A1%E8%AD%9C" title="簡譜">簡譜</a>上的ti音用7表示。</li> <li>著名罐裝<a href="/wiki/%E6%B1%BD%E6%B0%B4" class="mw-disambig" title="汽水">汽水</a><a href="/wiki/%E5%93%81%E7%89%8C" title="品牌">品牌</a>——<a href="/wiki/%E4%B8%83%E5%96%9C" title="七喜">七喜</a>。</li> <li>連鎖式便利店──<a href="/wiki/7-Eleven" title="7-Eleven">7-Eleven</a>。</li> <li>在<a href="/wiki/%E7%B2%B5%E8%AA%9E" class="mw-redirect" title="粵語">粵語</a>裏，7的中國數字大寫「柒」被廣泛用作<a href="/wiki/%E7%B2%97%E5%8F%A3" class="mw-redirect" title="粗口">粗口</a>之用，加上其粵語的母音和「執」字相同（「執」字可演變成「執笠」，在粵語中意指結業），故如同4的中國數字音「死」字一樣，甚少使用。</li> <li><a href="/wiki/Windows_7" title="Windows 7">Windows 7</a>、<a href="/wiki/Windows_Phone_7" class="mw-redirect" title="Windows Phone 7">Windows Phone 7</a>为微軟作業系統。</li> <li>吃角子老虎機的大獎圖樣是7。</li> <li>世界共有<a href="/wiki/%E4%B8%83%E5%A4%A7%E6%B4%B2" class="mw-redirect" title="七大洲">七大洲</a>。</li> <li><a href="/wiki/%E5%8C%97%E6%96%97%E4%B8%83%E6%98%9F" title="北斗七星">北斗七星</a>。</li> <li><a href="/wiki/%E4%BA%8C%E5%8D%81%E5%85%AB%E6%98%9F%E5%AE%BF" class="mw-redirect" title="二十八星宿">二十八星宿</a>以四象（青龍、白虎、朱雀、玄武）分組，一組有七個星宿。</li> <li>早起開門七件事，<a href="/wiki/%E6%9F%B4" class="mw-redirect" title="柴">柴</a>、<a href="/wiki/%E8%B0%B7%E7%89%A9" title="谷物">米</a>、<a href="/wiki/%E6%B2%B9" title="油">油</a>、<a href="/wiki/%E9%A3%9F%E7%9B%90" title="食盐">鹽</a>、<a href="/wiki/%E9%86%AC" title="醬">醬</a>、<a href="/wiki/%E9%86%8B" title="醋">醋</a>、<a href="/wiki/%E8%8C%B6" title="茶">茶</a>。</li> <li><a href="/wiki/%E7%AB%B9%E6%9E%97%E4%B8%83%E8%B3%A2" class="mw-redirect" title="竹林七賢">竹林七賢</a>。</li> <li><a href="/wiki/%E5%85%A8%E7%9C%9F%E4%B8%83%E5%AD%90" class="mw-redirect" title="全真七子">全真七子</a>。</li> <li><a href="/wiki/%E6%AD%A6%E7%95%B6%E4%B8%83%E4%BF%A0" class="mw-redirect" title="武當七俠">武當七俠</a>。</li> <li>日本春天七草，是指<a href="/wiki/%E6%B0%B4%E8%8A%B9" title="水芹">水芹</a>、<a href="/wiki/%E8%8D%A0%E8%8F%9C" title="荠菜">荠菜</a>、<a href="/wiki/%E9%BC%A0%E9%BA%B4%E8%8D%89" title="鼠麴草">鼠曲草</a>、<a href="/wiki/%E7%B9%81%E7%BC%95" title="繁缕">繁缕</a>、<a href="/wiki/%E5%AE%9D%E7%9B%96%E8%8D%89" title="宝盖草">宝盖草</a>、<a href="/wiki/%E8%94%93%E8%8F%81" class="mw-redirect" title="蔓菁">蔓菁</a>、<a href="/wiki/%E8%90%9D%E5%8D%9C" title="萝卜">萝卜</a>。</li> <li>日本秋天七草，是指<a href="/wiki/%E8%83%A1%E6%9E%9D%E5%AD%90" title="胡枝子">胡枝子</a>、<a href="/wiki/%E8%91%9B%E8%97%A4" class="mw-redirect" title="葛藤">葛藤</a>、<a href="/wiki/%E7%9E%BF%E9%BA%A5" class="mw-redirect" title="瞿麥">瞿麥</a>、<a href="/wiki/%E6%9D%BE%E8%98%BF" class="mw-disambig" title="松蘿">女蘿</a>、<a href="/wiki/%E8%98%AD%E8%8D%89" class="mw-redirect" title="蘭草">蘭草</a>、<a href="/wiki/%E6%A1%94%E6%A2%97" title="桔梗">桔梗</a>和<a href="/wiki/%E7%8B%97%E5%B0%BE%E8%8D%89" title="狗尾草">狗尾草</a>。</li> <li><a href="/wiki/%E4%B8%83%E5%A4%95" title="七夕">七夕</a>。</li> <li><a href="/wiki/%E4%B8%83%E5%B7%A7%E7%AF%80" class="mw-redirect" title="七巧節">七巧節</a>。</li> <li><a href="/wiki/%E4%B8%83%E5%B7%A7%E6%9D%BF" title="七巧板">七巧板</a>。</li> <li>在動漫<a href="/wiki/%E5%AE%B6%E5%BA%AD%E6%95%99%E5%B8%ABHITMAN_REBORN!#73" title="家庭教師HITMAN REBORN!">家庭教師HITMAN REBORN!</a>中，7<sup>3</sup>的原石正是創造這個世界的基石，分別代表七個「阿爾柯巴雷諾奶嘴」、七枚「彭哥列指環」、七枚「瑪雷指環」。</li> <li>在動漫<a href="/wiki/%E5%A6%96%E7%B2%BE%E7%9A%84%E5%B0%BE%E5%B7%B4" class="mw-redirect" title="妖精的尾巴">妖精的尾巴</a>中有許多設定跟7有關。</li> <li>1~10中，用閩南語文音或白音唸，唯一一個發音相同的。</li> <li>在日本7有帶來幸運之意味。</li> <li>7在佛教有圓滿之意，指包含東南西北四方、上下二方、當中，總共七個方位，亦即所有的空間，故有圓滿、一切、多數之意。</li> <li>音乐有7个音符，是指<a href="/wiki/C_(%E9%9F%B3%E5%90%8D)" title="C (音名)">do</a>、<a href="/wiki/D_(%E9%9F%B3%E5%90%8D)" title="D (音名)">re</a>、<a href="/wiki/E_(%E9%9F%B3%E5%90%8D)" title="E (音名)">mi</a>、<a href="/wiki/F_(%E9%9F%B3%E5%90%8D)" title="F (音名)">fa</a>、<a href="/wiki/G_(%E9%9F%B3%E5%90%8D)" title="G (音名)">so</a>、<a href="/wiki/A_(%E9%9F%B3%E5%90%8D)" title="A (音名)">la</a>、<a href="/wiki/B_(%E9%9F%B3%E5%90%8D)" title="B (音名)">Si/Ti</a>。</li> <li><a href="/wiki/%E6%88%B0%E5%9C%8B%E4%B8%83%E9%9B%84" class="mw-redirect" title="戰國七雄">戰國七雄</a>分別為<a href="/wiki/%E9%BD%8A%E5%9C%8B" class="mw-redirect" title="齊國">齊國</a>、<a href="/wiki/%E6%A5%9A%E5%9C%8B" class="mw-redirect" title="楚國">楚國</a>、<a href="/wiki/%E7%87%95%E5%9C%8B" class="mw-redirect" title="燕國">燕國</a>、<a href="/wiki/%E7%A7%A6%E5%9C%8B" class="mw-redirect" title="秦國">秦國</a>、<a href="/wiki/%E9%9F%93%E5%9C%8B_(%E6%88%B0%E5%9C%8B)" class="mw-redirect" title="韓國 (戰國)">韓國</a>、<a href="/wiki/%E8%B6%99%E5%9C%8B" class="mw-redirect" title="趙國">趙國</a>、<a href="/wiki/%E9%AD%8F%E5%9C%8B" class="mw-redirect" title="魏國">魏國</a>。</li> <li><a href="/wiki/%E6%A0%BC%E6%9E%97%E7%AB%A5%E8%A9%B1" title="格林童話">格林童話</a>當中的<a href="/wiki/%E7%8B%BC%E5%92%8C%E4%B8%83%E5%8F%AA%E5%B0%8F%E5%B1%B1%E7%BE%8A" title="狼和七只小山羊">狼和七隻小山羊</a>。</li> <li>喜、怒、哀、懼、愛、惡、欲為<a href="/wiki/%E4%B8%83%E6%83%85" title="七情">七情</a>。</li> <li><a href="/wiki/%E4%B8%83%E5%AE%97%E7%BD%AA" title="七宗罪">七宗罪</a>：傲慢、妒忌、暴怒、懶惰、貪婪、暴食、色慾。</li> <li><a href="/wiki/%E4%B8%83%E7%BE%8E%E5%BE%B7" title="七美德">七美德</a>：謙卑、寬容、耐心、勤勉、慷慨、節制、貞潔。</li> <li><a href="/w/index.php?title=%E7%89%8C%E4%B8%83&action=edit&redlink=1" class="new" title="牌七（页面不存在）">牌七</a></li> <li>香菸品牌<a href="/wiki/%E4%B8%83%E6%98%9F%E9%A6%99%E7%85%99" class="mw-redirect" title="七星香煙">七星香煙</a>。</li> <li>著名小說<a href="/wiki/%E5%93%88%E5%88%A9%E6%B3%A2%E7%89%B9" class="mw-redirect" title="哈利波特">哈利波特</a>有七部。</li> <li><a href="/wiki/%E4%B9%9D%E9%BE%8D%E5%B7%B4%E5%A3%AB7%E8%99%9F%E7%B7%9A" title="九龍巴士7號線">九龍巴士7號線</a></li> <li><a href="/wiki/%E5%9F%8E%E5%B7%B47%E8%99%9F%E7%B7%9A" title="城巴7號線">城巴7號線</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="時間與曆法"><span id=".E6.99.82.E9.96.93.E8.88.87.E6.9B.86.E6.B3.95"></span>時間與曆法</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=7&action=edit&section=6" title="编辑章节：時間與曆法"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>現代國際通用的<a href="/wiki/%E5%85%AC%E5%8E%86" title="公历">西曆</a>，將1<a href="/wiki/%E5%B9%B4" title="年">年</a>分成12个<a href="/wiki/%E6%9C%88" title="月">月</a>。12个月每月長度不一，但都有7日，分別為<a href="/wiki/1%E6%9C%887%E6%97%A5" title="1月7日">1月7日</a>、<a href="/wiki/2%E6%9C%887%E6%97%A5" title="2月7日">2月7日</a>、<a href="/wiki/3%E6%9C%887%E6%97%A5" title="3月7日">3月7日</a>、<a href="/wiki/4%E6%9C%887%E6%97%A5" title="4月7日">4月7日</a>、<a href="/wiki/5%E6%9C%887%E6%97%A5" title="5月7日">5月7日</a>、<a href="/wiki/6%E6%9C%887%E6%97%A5" title="6月7日">6月7日</a>、<a href="/wiki/7%E6%9C%887%E6%97%A5" title="7月7日">7月7日</a>、<a href="/wiki/8%E6%9C%887%E6%97%A5" title="8月7日">8月7日</a>、<a href="/wiki/9%E6%9C%887%E6%97%A5" title="9月7日">9月7日</a>、<a href="/wiki/10%E6%9C%887%E6%97%A5" title="10月7日">10月7日</a>、<a href="/wiki/11%E6%9C%887%E6%97%A5" title="11月7日">11月7日</a>和<a href="/wiki/12%E6%9C%887%E6%97%A5" title="12月7日">12月7日</a>。</li> <li>此外，在公曆紀年方面，人類對公元<a href="/wiki/%E5%89%8D7%E5%B9%B4" title="前7年">前7年</a>、公元<a href="/wiki/7%E5%B9%B4" title="7年">7年</a>，公元<a href="/wiki/%E5%89%8D7%E4%B8%96%E7%BA%AA" title="前7世纪">前7世纪</a>及公元<a href="/wiki/7%E4%B8%96%E7%BA%AA" title="7世纪">7世纪</a>均有記載。</li> <li><a href="/wiki/%E8%BE%B2%E6%9B%86%E4%B8%83%E6%9C%88" class="mw-redirect" title="農曆七月">農曆七月</a>俗稱鬼月</li></ul> <div class="mw-heading mw-heading2"><h2 id="另見"><span id=".E5.8F.A6.E8.A6.8B"></span>另見</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=7&action=edit&section=7" title="编辑章节：另見"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><span class="selfreference"><a href="/wiki/Special:%E5%89%8D%E7%BC%80%E7%B4%A2%E5%BC%95/7" title="Special:前缀索引/7">名稱以「7」開頭的所有条目</a></span></li> <li><span class="selfreference"><a href="/wiki/Special:%E5%89%8D%E7%BC%80%E7%B4%A2%E5%BC%95/%E4%B8%83" title="Special:前缀索引/七">名稱以「七」開頭的所有条目</a></span></li></ul> <div class="mw-heading mw-heading2"><h2 id="參考"><span id=".E5.8F.83.E8.80.83"></span>參考</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=7&action=edit&section=8" title="编辑章节：參考"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="references-small"> <ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><cite class="citation book">Lounesto, Pertti. 7 - The cross product. <a rel="nofollow" class="external text" href="https://archive.org/details/cliffordalgebras00loun_711">Clifford Algebras and Spinors</a> 2nd edition. Cambridge University Press. 2001: <a rel="nofollow" class="external text" href="https://archive.org/details/cliffordalgebras00loun_711/page/n103">96</a>. <a href="/wiki/Special:%E7%BD%91%E7%BB%9C%E4%B9%A6%E6%BA%90/9780511526022" title="Special:网络书源/9780511526022"><span title="国际标准书号">ISBN</span> 9780511526022</a>. <a rel="nofollow" class="external text" href="https://doi.org/10.1017%2FCBO9780511526022.009"><span title="數位物件識別號">doi:10.1017/CBO9780511526022.009</span></a> <span style="font-family: sans-serif; cursor: default; color:var(--color-subtle, #54595d); font-size: 0.8em; bottom: 0.1em; font-weight: bold;" title="连接到英语网页">（英语）</span>.</cite><span title="ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fzh.wikipedia.org%3A7&rft.atitle=7+-+The+cross+product&rft.aufirst=Pertti&rft.aulast=Lounesto&rft.btitle=Clifford+Algebras+and+Spinors&rft.date=2001&rft.edition=2nd+edition&rft.genre=bookitem&rft.isbn=9780511526022&rft.pages=96&rft.pub=Cambridge+University+Press&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fcliffordalgebras00loun_711&rft_id=info%3Adoi%2F10.1017%2FCBO9780511526022.009&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook" class="Z3988"><span style="display:none;"> </span></span><span class="citation-comment" style="display:none; color:#33aa33"> 引文格式1维护：冗余文本 (<a href="/wiki/Category:%E5%BC%95%E6%96%87%E6%A0%BC%E5%BC%8F1%E7%BB%B4%E6%8A%A4%EF%BC%9A%E5%86%97%E4%BD%99%E6%96%87%E6%9C%AC" title="Category:引文格式1维护：冗余文本">link</a>)</span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><cite class="citation web"><a rel="nofollow" class="external text" href="http://www.rsc.org/periodic-table">Royal Society of Chemistry - Visual Element Periodic Table</a>. <span class="reference-accessdate"> [<span class="nowrap">2012-10-14</span>]</span>. （原始内容<a rel="nofollow" class="external text" href="https://web.archive.org/web/20160410112333/http://www.rsc.org/periodic-table">存档</a>于2016-04-10）.</cite><span title="ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fzh.wikipedia.org%3A7&rft.btitle=Royal+Society+of+Chemistry+-+Visual+Element+Periodic+Table&rft.genre=unknown&rft_id=http%3A%2F%2Fwww.rsc.org%2Fperiodic-table&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text">《<a href="/wiki/%E7%8E%B0%E4%BB%A3%E6%B1%89%E8%AF%AD%E8%AF%8D%E5%85%B8" title="现代汉语词典">现代汉语词典</a>》<a href="/wiki/%E5%95%86%E5%8A%A1%E5%8D%B0%E4%B9%A6%E9%A6%86" title="商务印书馆">商务印书馆</a> 1978年版、p.462。</span> </li> </ol> </div> <style data-mw-deduplicate="TemplateStyles:r82655521">.mw-parser-output .side-box{margin:4px 0;box-sizing:border-box;border:1px solid #aaa;font-size:88%;line-height:1.25em;background-color:#f9f9f9;display:flow-root}.mw-parser-output .side-box-abovebelow,.mw-parser-output .side-box-text{padding:0.25em 0.9em}.mw-parser-output .side-box-image{padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .side-box-imageright{padding:2px 0.9em 2px 0;text-align:center}@media(min-width:500px){.mw-parser-output .side-box-flex{display:flex;align-items:center}.mw-parser-output .side-box-text{flex:1}}@media(min-width:720px){.mw-parser-output .side-box{width:238px}.mw-parser-output .side-box-right{clear:right;float:right;margin-left:1em}.mw-parser-output .side-box-left{margin-right:1em}}</style><div class="side-box side-box-right plainlinks sistersitebox" style="font-size:small;"><style data-mw-deduplicate="TemplateStyles:r82655520">.mw-parser-output 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\"item\",\n [\"id\"] = \"Q68401769\",\n [\"numeric-id\"] = 68401769,\n },\n },\n [\"hash\"] = \"a374ae9d234db094544ae5babad666965034f47e\",\n [\"property\"] = \"P3294\",\n [\"snaktype\"] = \"value\",\n },\n },\n },\n [\"qualifiers-order\"] = table#9 {\n \"P3294\",\n },\n [\"rank\"] = \"normal\",\n [\"type\"] = \"statement\",\n}\ntable#1 {\n [\"id\"] = \"Q23350$e7e78acd-44aa-8d6e-5414-b6ea7fb47a8b\",\n [\"mainsnak\"] = table#2 {\n [\"datatype\"] = \"string\",\n [\"datavalue\"] = table#3 {\n [\"type\"] = \"string\",\n [\"value\"] = \"--...\",\n },\n [\"property\"] = \"P3295\",\n [\"snaktype\"] = \"value\",\n },\n [\"qualifiers\"] = table#4 {\n [\"P3294\"] = table#5 {\n table#6 {\n [\"datatype\"] = \"wikibase-item\",\n [\"datavalue\"] = table#7 {\n [\"type\"] = \"wikibase-entityid\",\n [\"value\"] = table#8 {\n [\"entity-type\"] = \"item\",\n [\"id\"] = \"Q79897\",\n [\"numeric-id\"] = 79897,\n },\n },\n [\"hash\"] = \"f1756d6072a1b5a6bb9f9b28ba190da774d7f15f\",\n [\"property\"] = 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table#4 {\n [\"P3294\"] = table#5 {\n table#6 {\n [\"datatype\"] = \"wikibase-item\",\n [\"datavalue\"] = table#7 {\n [\"type\"] = \"wikibase-entityid\",\n [\"value\"] = table#8 {\n [\"entity-type\"] = \"item\",\n [\"id\"] = \"Q69428365\",\n [\"numeric-id\"] = 69428365,\n },\n },\n [\"hash\"] = \"83d7278124071e654d4b67b6bb28e99a1751d113\",\n [\"property\"] = \"P3294\",\n [\"snaktype\"] = \"value\",\n },\n },\n },\n [\"qualifiers-order\"] = table#9 {\n \"P3294\",\n },\n [\"rank\"] = \"normal\",\n [\"type\"] = \"statement\",\n}\ntable#1 {\n [\"id\"] = \"Q23350$AE7F5EEE-30C7-40B1-A383-27E144A09249\",\n [\"mainsnak\"] = table#2 {\n [\"datatype\"] = \"commonsMedia\",\n [\"datavalue\"] = table#3 {\n [\"type\"] = \"string\",\n [\"value\"] = \"Maya 7.svg\",\n },\n [\"property\"] = \"P7415\",\n [\"snaktype\"] = \"value\",\n },\n [\"qualifiers\"] = table#4 {\n [\"P3294\"] = table#5 {\n table#6 {\n [\"datatype\"] = \"wikibase-item\",\n [\"datavalue\"] = table#7 {\n [\"type\"] = 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