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Function: driver
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Function: get_footer
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Function: require_once
수학동아 - 폴리매스
함께 풀고 싶은 문제
창의력을 기를 수 있는 수학 문제 또는 퍼즐을 내는 곳입니다.
[창의 퍼즐] [계산][확률] 세계여행 중 코로나에 걸릴 확률
17수락
2020.10.01 05:16
조회 508
수락은 세계일주를 하고 있었다.
당시 코로나 바이러스가 유행이라서 한 나라에 갈때마다 자가격리를 4일동안 해야했다
수락은 - 80일간의 세계일주 - 에서 주인공이 갔던 곳을 그대로 간다고 한다.
수락은 한 나라에서 40명의 사람을 만나고 각 사람들이 코로나에 걸렸을 확률은 35%이다
코로나에 걸리면 40일동안 자가격리를 해야하고 40일 후에 다시 원상태로 돌아온다.
그렇다면 수락이 가장 늦게 세계일주를 완료할 확률은 얼마인가?
지금 바로
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