{"id":10812,"date":"2023-08-11T11:05:08","date_gmt":"2023-08-11T03:05:08","guid":{"rendered":"https:\/\/blog.iyatt.com\/?p=10812"},"modified":"2025-04-01T20:23:49","modified_gmt":"2025-04-01T12:23:49","slug":"%e6%8e%92%e5%88%97%e7%bb%84%e5%90%88%e8%ae%a1%e7%ae%97%e5%85%ac%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/blog.iyatt.com\/?p=10812","title":{"rendered":"\u6392\u5217\u7ec4\u5408\u8ba1\u7b97\u516c\u5f0f"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 ez-toc-wrap-center counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title ez-toc-toggle\" style=\"cursor:pointer\">\u76ee\u5f55<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/blog.iyatt.com\/?p=10812\/#%E6%8E%92%E5%88%97\" >\u6392\u5217<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/blog.iyatt.com\/?p=10812\/#%E7%BB%84%E5%90%88\" >\u7ec4\u5408<\/a><\/li><\/ul><\/nav><\/div>\n<h1><span class=\"ez-toc-section\" id=\"%E6%8E%92%E5%88%97\"><\/span>\u6392\u5217<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<pre><code class=\"language-katex\">A_n^m=\\frac{n!}{(n-m)!}<\/code><\/pre>\n<p>\u9636\u4e58\uff1a<code class=\"katex-inline\">n!=1\\times2\\times3\\times\\cdots\\times(n-1)\\times n<\/code>\uff0c<code>\u5176\u4e2d 0\uff01=1<\/code><\/p>\n<p>\u6392\u5217\u8981\u8003\u8651\u987a\u5e8f\uff0c\u6bd4\u5982<\/p>\n<pre><code class=\"language-katex\">\\begin{array}{| c | c | c |}\n\\hline \\\\\n1 &amp; 2 &amp; 3 \\\\\n\\hline\n\\end{array}<\/code><\/pre>\n<p>\u8fd9\u91cc\u6709 3 \u4e2a\u6570\uff0c\u5982\u679c\u8981\u4ece\u4e2d\u9009 2 \u4e2a\u51fa\u6765\uff0c\u4e14\u8981\u8003\u8651\u987a\u5e8f\u5c31\u6709 12\u300113\u300123\u300121\u300131\u300132 \u5171 6 \u4e2d\u53ef\u80fd\uff0c\u8ba1\u7b97\u5f0f\uff1a<code class=\"katex-inline\">A_3^2=\\frac{3!}{(3-2)!}=\\frac{1\\times2\\times3}{1}=6<\/code><\/p>\n<h1><span class=\"ez-toc-section\" id=\"%E7%BB%84%E5%90%88\"><\/span>\u7ec4\u5408<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<pre><code class=\"language-katex\">C_n^m=\\frac{n!}{m!(n-m)!}<\/code><\/pre>\n<p>\u8fd8\u662f\u4ece\u90a3 3 \u4e2a\u6570\u4e2d\u9009\u51fa\u4e24\u4e2a\u6570\uff0c\u4f46\u662f\u4e0d\u8003\u8651\u987a\u5e8f\uff0c\u5c31\u6709 12\u300113\u300123 \u5171 3 \u4e2d\u60c5\u51b5\uff0c\u6b64\u65f6 12 \u548c 21 \u90fd\u662f\u540c\u4e00\u79cd\u60c5\u51b5\uff0c\u53ea\u662f\u4e3a\u4e86\u9009\u51fa 1 \u548c 2 \u540c\u65f6\u5b58\u5728\u8fd9\u4e2a\u7ec4\u5408\uff0c\u8ba1\u7b97\u5f0f\uff1a<code class=\"katex-inline\">C_3^2=\\frac{3!}{2!(3-2)!}=\\frac{1\\times2\\times3}{1\\times2\\times1}=3<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6392\u5217 A_n^m=\\frac{n!}{(n-m)!} \u9636\u4e58\uff1an!=1\\times2\\times3\\times\\ [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"zakra_page_container_layout":"customizer","zakra_page_sidebar_layout":"customizer","zakra_remove_content_margin":false,"zakra_sidebar":"customizer","zakra_transparent_header":"customizer","zakra_logo":0,"zakra_main_header_style":"default","zakra_menu_item_color":"","zakra_menu_item_hover_color":"","zakra_menu_item_active_color":"","zakra_menu_active_style":"","zakra_page_header":true,"_lmt_disableupdate":"no","_lmt_disable":"no","footnotes":""},"categories":[1],"tags":[],"class_list":["post-10812","post","type-post","status-publish","format-standard","hentry","category-all"],"modified_by":"IYATT-yx","_links":{"self":[{"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=\/wp\/v2\/posts\/10812","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10812"}],"version-history":[{"count":1,"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=\/wp\/v2\/posts\/10812\/revisions"}],"predecessor-version":[{"id":19754,"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=\/wp\/v2\/posts\/10812\/revisions\/19754"}],"wp:attachment":[{"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10812"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10812"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10812"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}