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수학동아 - 폴리매스
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함께 풀고 싶은 문제
창의력을 기를 수 있는 수학 문제 또는 퍼즐을 내는 곳입니다.
[창의 퍼즐] [확률]승리를 향하여!
space 2020.10.03 20:39 조회 437
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페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

A,B,C,D가 토너먼트 방식으로 서로 대결을 한다

나는 A다

A가 이길 확률은 20%고

B가 35%, C는 47.5%, D는 50%다

확률이 남으면 무승부라서 한 번 더한다

그럼 내가 이길 확률은 얼마인가?

이 문제 어떠셨나요?

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  •  
    다시 도전
    222 Lv.9 2020.10.04 01:48 비밀댓글
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    •  
      space Lv.8 2020.10.04 19:36

      아닙니다

      A가 20%, D가 50%면 무승부일 확률은 100-50-20으로 30%입니다

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