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함께 풀고 싶은 문제
깊이 고민해볼 수 있는 수학 문제를 내는 곳입니다
[세상을 바꿀 문제] 오징어 게임에서 영감을 얻은 문제
아인수타인 2021.10.05 03:31 조회 560
문제 푼 사람 0명
공유하기
페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

오징어 게임에 등장하는 게임 중 하나는 아래와 같다.

규칙:

1. 16명의 참가자들은 start부터 18개의 칸을 밟아 finish에 도착해야 한다.

2. 각 칸에는 일반유리 하나와 강화유리 하나가 있으며, 강화유리는 밟아도 괜찮지만 일반유리는 밟으면 깨져서 떨어지고, 죽는다.

3. 강화유리와 일반유리는 구분이 안 된다.

4. 이전 참가자들이 탈락하더라도 게임판은 교체되지 않는다. 예를 들어, 1번 참가자가 처음부터 죽었으면 2번 참가자는 적어도 첫 번째 칸에서는 살 수 있다.

 

그러면, finish에 도착하는 사람 수의 기댓값을 구하라. 소수로 나올 경우 소수점 아래 셋째 자리에서 반올림하여라.

이 문제 어떠셨나요?

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  •  
    RTAI Lv.7 2021.10.05 05:02

    ㄷㄷ 떨어진 사람들의 명복을 빕니다

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    부분해결
    루찬 Lv.5 2021.10.13 02:08 비밀댓글
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      아인수타인 Lv.12 2021.10.13 02:28 비밀댓글
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    부분해결
    켋 Lv.7 2021.10.17 19:22 비밀댓글

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      아인수타인 Lv.12 2021.10.19 00:39 비밀댓글
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    김미래_기자 Lv.15 2021.11.02 22:41 비밀댓글
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      아인수타인 Lv.12 2021.11.03 21:57 비밀댓글
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    •  
      김미래_기자 Lv.15 2021.11.03 23:17

      넵넵~ 제가 사진 넘겨드릴게요~!

       

      수학동아 김미래

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