{"id":770,"date":"2024-07-11T08:22:00","date_gmt":"2024-07-11T08:22:00","guid":{"rendered":"http:\/\/www.ohsumin.com\/?p=770"},"modified":"2025-06-11T01:23:00","modified_gmt":"2025-06-11T01:23:00","slug":"%ec%a1%b0%ed%95%a9","status":"publish","type":"post","link":"http:\/\/www.inmining.co.kr\/?p=770","title":{"rendered":"\uc870\ud569(Combination)"},"content":{"rendered":"\n

\\(\\)<\/p>\n\n\n\n

\uc870\ud569(combination)\uc740 \uc8fc\uc5b4\uc9c4 \uc9d1\ud569\uc5d0\uc11c \uc21c\uc11c\ub97c \uace0\ub824\ud558\uc9c0 \uc54a\uace0 \uc120\ud0dd\ud560 \uc218 \uc788\ub294 \ubd80\ubd84\uc9d1\ud569\uc744 \ub9d0\ud569\ub2c8\ub2e4. \uc870\ud569\uc758 \uac1c\uc218\ub97c \uad6c\ud558\ub294 \ubc29\ubc95\uc740 \uc218\ud559\uc5d0\uc11c \ub9e4\uc6b0 \uc911\uc694\ud55c \uac1c\ub150 \uc911 \ud558\ub098\uc785\ub2c8\ub2e4. \uc870\ud569\uc740 \uc8fc\ub85c \ud1b5\uacc4, \ud655\ub960, \uc870\ud569\ub860 \ub4f1 \ub2e4\uc591\ud55c \ubd84\uc57c\uc5d0\uc11c \uc0ac\uc6a9\ub429\ub2c8\ub2e4.<\/p>\n\n\n\n

<\/span>\uc870\ud569\uc758 \uc218\ud559\uc801 \uc815\uc758<\/span><\/h3>\n\n\n\n

\uc870\ud569\uc758 \uc218\ud559\uc801 \uc815\uc758\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4. ( n )\uac1c\uc758 \uc6d0\uc18c \uc911\uc5d0\uc11c ( r )\uac1c\uc758 \uc6d0\uc18c\ub97c \uc120\ud0dd\ud558\ub294 \uc870\ud569\uc758 \uc218\ub294 \ub2e4\uc74c\uacfc \uac19\uc774 \uacc4\uc0b0\ub429\ub2c8\ub2e4:<\/p>\n\n\n\n

\\[ \\binom{n}{r} = \\frac{n!}{r!(n-r)!} \\]<\/p>\n\n\n\n

\uc5ec\uae30\uc11c:<\/p>\n\n\n\n

    \n
  • \\( \\binom{n}{r} \\)\uc740 “n\uac1c \uc911\uc5d0\uc11c r\uac1c\ub97c \uc120\ud0dd\ud558\ub294 \uc870\ud569\uc758 \uc218”\ub97c \uc758\ubbf8\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n
  • \\( n! \\)\uc740 \\( n \\)\uc758 \uacc4\uc2b9(factorial)\uc73c\ub85c, \\( 1 \\times 2 \\times 3 \\times \\cdots \\times n \\)\uc744 \uc758\ubbf8\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n
  • \\( r! \\)\uacfc \\( (n-r)! \\)\ub3c4 \uac01\uac01 ( r )\uc758 \uacc4\uc2b9\uacfc ( (n-r) )\uc758 \uacc4\uc2b9\uc785\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n

    <\/span>\uc608\uc81c<\/span><\/h3>\n\n\n\n

    \uc608\uc81c 1: \uce74\ub4dc \ubf51\uae30<\/h4>\n\n\n\n

    52\uc7a5\uc758 \uce74\ub4dc \uc911\uc5d0\uc11c 5\uc7a5\uc744 \ubf51\ub294 \uacbd\uc6b0\ub97c \uc0dd\uac01\ud574\ubd05\uc2dc\ub2e4. \uc774\ub54c, \uc21c\uc11c\ub294 \uc911\uc694\ud558\uc9c0 \uc54a\uc73c\ubbc0\ub85c \uc870\ud569\uc744 \uc0ac\uc6a9\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n

    \\[ \\binom{52}{5} = \\frac{52!}{5!(52-5)!} = \\frac{52!}{5! \\times 47!} \\]<\/p>\n\n\n\n

    \uc774\ub97c \uacc4\uc0b0\ud558\uba74 2,598,960 \uac00\uc9c0\uc758 \uc870\ud569\uc774 \ub098\uc635\ub2c8\ub2e4.<\/p>\n\n\n\n

    \uc608\uc81c 2: \ud559\uc0dd \uadf8\ub8f9 \ub9cc\ub4e4\uae30<\/h4>\n\n\n\n

    10\uba85\uc758 \ud559\uc0dd \uc911\uc5d0\uc11c 3\uba85\uc744 \uc120\ud0dd\ud558\uc5ec \ud300\uc744 \ub9cc\ub4dc\ub294 \uacbd\uc6b0\ub97c \uc0dd\uac01\ud574\ubd05\uc2dc\ub2e4.<\/p>\n\n\n\n

    \\[ \\binom{10}{3} = \\frac{10!}{3!(10-3)!} = \\frac{10!}{3! \\times 7!} = 120 \\]<\/p>\n\n\n\n

    \ub530\ub77c\uc11c, 10\uba85 \uc911 3\uba85\uc744 \uc120\ud0dd\ud558\ub294 \ubc29\ubc95\uc740 120\uac00\uc9c0\uac00 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n

    <\/span>\uc870\ud569\uacfc \uc21c\uc5f4\uc758 \ucc28\uc774<\/span><\/h3>\n\n\n\n

    \uc870\ud569\uacfc \uc21c\uc5f4(permutation)\uc740 \ube44\uc2b7\ud55c \uac1c\ub150\uc774\uc9c0\ub9cc, \ub2e4\uc74c\uacfc \uac19\uc740 \ucc28\uc774\uc810\uc774 \uc788\uc2b5\ub2c8\ub2e4:<\/p>\n\n\n\n

      \n
    • \uc21c\uc5f4<\/strong>: \uc21c\uc11c\ub97c \uace0\ub824\ud558\uc5ec \uc120\ud0dd\ud558\ub294 \uacbd\uc6b0. \uc608\ub97c \ub4e4\uc5b4, A, B, C\ub97c \uc120\ud0dd\ud558\ub294 \uacbd\uc6b0 ABC\uc640 BAC\ub294 \ub2e4\ub978 \uc21c\uc5f4\ub85c \uac04\uc8fc\ub429\ub2c8\ub2e4.<\/li>\n\n\n\n
    • \uc870\ud569<\/strong>: \uc21c\uc11c\ub97c \uace0\ub824\ud558\uc9c0 \uc54a\uace0 \uc120\ud0dd\ud558\ub294 \uacbd\uc6b0. \uc608\ub97c \ub4e4\uc5b4, A, B, C\ub97c \uc120\ud0dd\ud558\ub294 \uacbd\uc6b0 ABC\uc640 BAC\ub294 \uac19\uc740 \uc870\ud569\uc73c\ub85c \uac04\uc8fc\ub429\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n

      <\/span>\uc870\ud569\uc758 \uc751\uc6a9<\/span><\/h3>\n\n\n\n

      \uc870\ud569\uc740 \ub2e4\uc591\ud55c \uc2e4\uc0dd\ud65c \ubb38\uc81c\uc5d0 \uc801\uc6a9\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uba87 \uac00\uc9c0 \uc608\ub97c \ub4e4\uc5b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4:<\/p>\n\n\n\n

        \n
      1. \ub85c\ub610 \ubc88\ud638 \uc120\ud0dd<\/strong>: \ub85c\ub610 \ubc88\ud638\ub294 \uc21c\uc11c\uc5d0 \uad00\uacc4\uc5c6\uc774 \uc120\ud0dd\ub418\ubbc0\ub85c \uc870\ud569\uc744 \uc0ac\uc6a9\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n
      2. \ud300 \uad6c\uc131<\/strong>: \ud300\uc744 \uad6c\uc131\ud560 \ub54c \uc21c\uc11c\uac00 \uc911\uc694\ud558\uc9c0 \uc54a\ub2e4\uba74 \uc870\ud569\uc744 \uc0ac\uc6a9\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n
      3. \uc74c\uc2dd \uc120\ud0dd<\/strong>: \uba54\ub274\uc5d0\uc11c \uc5ec\ub7ec \uac00\uc9c0 \uc74c\uc2dd\uc744 \uc120\ud0dd\ud560 \ub54c, \uc21c\uc11c\uc5d0 \uad00\uacc4\uc5c6\uc774 \uc120\ud0dd\ud558\ub294 \uacbd\uc6b0 \uc870\ud569\uc744 \uc0ac\uc6a9\ud569\ub2c8\ub2e4.<\/li>\n<\/ol>\n\n\n\n

        <\/span>\uacb0\ub860<\/span><\/h3>\n\n\n\n

        \uc870\ud569\uc740 \uc8fc\uc5b4\uc9c4 \uc9d1\ud569\uc5d0\uc11c \uc21c\uc11c\ub97c \uace0\ub824\ud558\uc9c0 \uc54a\uace0 \ubd80\ubd84\uc9d1\ud569\uc744 \uc120\ud0dd\ud558\ub294 \ubc29\ubc95\uc744 \ub9d0\ud569\ub2c8\ub2e4. \uc774\ub294 \ub2e4\uc591\ud55c \ubd84\uc57c\uc5d0\uc11c \uc911\uc694\ud55c \uc5ed\ud560\uc744 \ud558\uba70, \uc774\ub97c \uacc4\uc0b0\ud558\ub294 \uacf5\uc2dd\uc740 \\( \\binom{n}{r} = \\frac{n!}{r!(n-r)!} \\)\uc785\ub2c8\ub2e4. \uc870\ud569\uacfc \uc21c\uc5f4\uc758 \ucc28\uc774\uc810\uacfc \uc870\ud569\uc758 \uc751\uc6a9\uc744 \uc774\ud574\ud558\uba74, \uc2e4\uc0dd\ud65c \ubb38\uc81c\ub97c \ud574\uacb0\ud558\ub294 \ub370 \uc720\uc6a9\ud558\uac8c \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"

        \uc870\ud569(combination)\uc740 \uc8fc\uc5b4\uc9c4 \uc9d1\ud569\uc5d0\uc11c \uc21c\uc11c\ub97c \uace0\ub824\ud558\uc9c0 \uc54a\uace0 \uc120\ud0dd\ud560 \uc218 \uc788\ub294 \ubd80\ubd84\uc9d1\ud569\uc744 \ub9d0\ud569\ub2c8\ub2e4. \uc870\ud569\uc758 \uac1c\uc218\ub97c \uad6c\ud558\ub294 \ubc29\ubc95\uc740 \uc218\ud559\uc5d0\uc11c \ub9e4\uc6b0 \uc911\uc694\ud55c…<\/p>\n","protected":false},"author":1,"featured_media":881,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-770","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-stat","wpcat-6-id"],"_links":{"self":[{"href":"http:\/\/www.inmining.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/770","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.inmining.co.kr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.inmining.co.kr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.inmining.co.kr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.inmining.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=770"}],"version-history":[{"count":2,"href":"http:\/\/www.inmining.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/770\/revisions"}],"predecessor-version":[{"id":880,"href":"http:\/\/www.inmining.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/770\/revisions\/880"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.inmining.co.kr\/index.php?rest_route=\/wp\/v2\/media\/881"}],"wp:attachment":[{"href":"http:\/\/www.inmining.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=770"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.inmining.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=770"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.inmining.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=770"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}