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[문장제 문제&개념응용] 토너먼트 경기
Scubed 2021.03.02 08:35 조회 481
문제 푼 사람 1명
공유하기
페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

8명이 토너먼트 경기를 한다.

이 때, 8명의 선수들 중 순위를 매기는데, 그에 따라 각각 a1, a2, ... a8이라 하자.

순위에 따라 승패는 무조건 결정된다. 즉, a1은 모든 상대를 이기고, a8은 모든 상대에게 진다.

이 때, a4가 2등을 하게 될 확률은?

(단, 대진표를 짤 때 상대가 같다 하더라도 위치가 다르면 다른 것으로 간주한다. 즉, a1-a5가 붙는 것과 a5-a1이 붙는 것은 다른 경우이다-쉽게 말해서 모두 다르게 본다고 생각하시면 됩니다)

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    파이파이 Lv.9 2021.03.02 08:39 비밀댓글
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      Scubed Lv.7 2021.03.02 08:45 비밀댓글
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    파이파이 Lv.9 2021.03.02 08:52 비밀댓글
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      Scubed Lv.7 2021.03.02 08:54 비밀댓글
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    파이파이 Lv.9 2021.03.02 09:03 비밀댓글
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    해결
    minjacool Lv.5 2021.03.02 20:01 비밀댓글

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    File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
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    File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
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    Function: getLatexImg

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    File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
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    Function: getLatexImg

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    Function: parseLatexImg

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    Line: 213
    Function: file_get_contents

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    Function: getLatexImg

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    Line: 90
    Function: parseLatexImg

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    Function: require_once

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    File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
    Line: 213
    Function: file_put_contents

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    Line: 236
    Function: getLatexImg

    File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/views/ver3/inc/view_comment_list.php
    Line: 90
    Function: parseLatexImg

    File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/views/ver3/inc/view.php
    Line: 343
    Function: view

    File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/controllers/ver3/Contents.php
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    Function: require_once

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    File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
    Line: 213
    Function: file_put_contents

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    Function: getLatexImg

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    Line: 90
    Function: parseLatexImg

    File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/views/ver3/inc/view.php
    Line: 343
    Function: view

    File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/controllers/ver3/Contents.php
    Line: 558
    Function: view

    File: /volume1/web/PhpstormProjects/www_polymath_co_kr/index.php
    Line: 315
    Function: require_once

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