{"height":"190","blog_url":"https://sumer-camus.hatenadiary.org/","version":"1.0","description":"20\u5e74\u3076\u308a\u306b\u516c\u5f0f\u306e\u5c0e\u304d\u65b9\u3092\u5fa9\u7fd2\u3002 \u5404\u7a2e\u691c\u5b9a\u306e\u524d\u63d0\u3067\u3001\u3053\u3053\u3044\u3089\u8fba\u304c\u5168\u7136\u5206\u304b\u3063\u3066\u3044\u306a\u304b\u3063\u305f\u3002 n\u500b\u306e\u96c6\u56e3\u304b\u3089r\u500b\u306e\u30b5\u30f3\u30d7\u30eb\u3092\u53d6\u308a\u51fa\u3059\u3068\u304d\u306e\u9806\u5217 \u7e70\u308a\u8fd4\u3057\u304c\u8a31\u3055\u308c\u308b\u5834\u5408 1\u500b\u76ee\u306e\u30b5\u30f3\u30d7\u30eb\u306fn\u901a\u308a\u306e\u53ef\u80fd\u6027\u30012\u500b\u76ee\u306e\u30b5\u30f3\u30d7\u30eb\u3082n\u901a\u308a\u306e\u53ef\u80fd\u6027\u30fb\u30fb \u6545\u306b\u3001 (1) n\u306er\u4e57 n^r \u7e70\u308a\u8fd4\u3057\u304c\u8a31\u3055\u308c\u306a\u3044\u5834\u5408 1\u500b\u76ee\u306e\u30b5\u30f3\u30d7\u30eb\u306fn\u901a\u308a\u306e\u53ef\u80fd\u6027\u30012\u500b\u76ee\u306e\u30b5\u30f3\u30d7\u30eb\u306f(n-1)\u901a\u308a\u306e\u53ef\u80fd\u6027\u30fb\u30fb \u6545\u306b\u3001 (2) n!/(n-r)! factorial(n)/factorial(n-r) \u4f46\u3057\u30010!=1 \u3068\u3059\u308b\u3002\u5f93\u3063\u3066\u3001r=n \u306e\u3068\u304d\u306e\u9806\u5217\u306f\u3001n! n\u500b\u306e\u96c6\u56e3\u304b\u3089r\u500b\u306e\u30b5\u30f3\u30d7\u30eb\u3092\u53d6\u308a\u51fa\u3059\u6642\u306e\u7d44\u307f\u5408\u308f\u305b\u5404r\u500b\u306e\u30b5\u30f3\u30d7\u30eb\u306e\u2026","type":"rich","provider_name":"Hatena Blog","url":"https://sumer-camus.hatenadiary.org/entry/20101228/1293558710","categories":[],"title":"\u9806\u5217\uff0f\u7d44\u307f\u5408\u308f\u305b\u306e\u52c9\u5f37\u3057\u76f4\u3057","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fsumer-camus.hatenadiary.org%2Fentry%2F20101228%2F1293558710\" title=\"\u9806\u5217\uff0f\u7d44\u307f\u5408\u308f\u305b\u306e\u52c9\u5f37\u3057\u76f4\u3057 - \u5149\u306f\u95c7\u3078\u5e30\u308c\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_name":"sumer_camus","width":"100%","provider_url":"https://hatena.blog","published":"2010-12-28 02:51:50","author_url":"https://blog.hatena.ne.jp/sumer_camus/","image_url":null,"blog_title":"\u5149\u306f\u95c7\u3078\u5e30\u308c"}