{"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwww.dtline2002.com%2Fentry%2F2024%2F06%2F15%2F061858\" title=\"\u9ad8\u6821\u6570\u5b66\u306e\u96e3\u6613\u5ea6\u3092\u77e5\u308b\uff01\u9806\u5217\u3068\u7d44\u5408\u305b\u306e\u516c\u5f0f - \u516c\u7acb\u30eb\u30fc\u30c8\u3092\u884c\u304f\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","url":"https://www.dtline2002.com/entry/2024/06/15/061858","description":"\u300c\u5834\u5408\u306e\u6570\u300d\u306e\u5f8c\u534a\u306b\u5165\u308b\u3068\u3001\u3044\u3088\u3044\u3088\u9806\u5217\u306e\u516c\u5f0f\u3068\u7d44\u5408\u305b\u306e\u516c\u5f0f\u304c\u767b\u5834\u3059\u308b\u3002 \u9806\u5217\u306e\u516c\u5f0f n\u500b\u306e\u7570\u306a\u308b\u3082\u306e\u304b\u3089r\u500b\u306e\u3082\u306e\u3092\u53d6\u308a\u51fa\u3057\u3066\u4e26\u3079\u308b\u9806\u5217\u306e\u6570 nPr = n(n-1)(n-2)\u30fb\u30fb\u30fb(n-r+1) \u7d44\u5408\u305b\u306e\u516c\u5f0f n\u500b\u306e\u7570\u306a\u308b\u3082\u306e\u304b\u3089r\u500b\u306e\u3082\u306e\u3092\u53d6\u308a\u51fa\u3059\u7d44\u5408\u305b\u306e\u6570 nCr = n! / r! (n-r)! = nPr / r! \u9806\u5217\u306e\u6570\u3092r\u306e\u968e\u4e57\u3067\u5272\u308b\u3068\u7d44\u5408\u305b\u306e\u6570\u306b\u306a\u308b\u3002 \u6570\u5e74\u3076\u308a\u306b\u9806\u5217\u3068\u7d44\u5408\u305b\u306e\u516c\u5f0f\u3092\u5c0b\u306d\u3089\u308c\u3066\u3001\u5373\u5ea7\u306b\u56de\u7b54\u3067\u304d\u308b\u4eba\u3063\u3066\u51c4\u3044\u3068\u601d\u3046\u3002\u305f\u3060\u3001\u3053\u306e\u4e8c\u3064\u306e\u516c\u5f0f\u3092\u899a\u3048\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u554f\u984c\u304c\u89e3\u3051\u308b\u3088\u3046\u306b\u306a\u308b\u3002 \u5834\u6240\u6307\u5b9a\u306e\u554f\u984c \u30ed\u30fc\u30de\u5b57\u306e\u6587\u5b57\u5217\uff18\u500b\u304c\u4e0e\u3048\u3089\u308c\u3066\u3001b\u3068c\u3092\u4e21\u7aef\u306b\u3059\u308b\u3068\u304b\u3001b\u3068\u2026","width":"100%","blog_url":"https://www.dtline2002.com/","version":"1.0","image_url":null,"author_url":"https://blog.hatena.ne.jp/DTLINE2002/","published":"2024-06-15 06:18:58","provider_name":"Hatena Blog","title":"\u9ad8\u6821\u6570\u5b66\u306e\u96e3\u6613\u5ea6\u3092\u77e5\u308b\uff01\u9806\u5217\u3068\u7d44\u5408\u305b\u306e\u516c\u5f0f","type":"rich","categories":[],"height":"190","blog_title":"\u516c\u7acb\u30eb\u30fc\u30c8\u3092\u884c\u304f","provider_url":"https://hatena.blog","author_name":"DTLINE2002"}