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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] 모두 함께 댄스, 댄스! (토비병)
관종이
2020.02.01 08:06
조회 583
마리오, 루이지, 링크, 데이지, 쿠파, 요시, 키노피오, 키노피코, 소닉, 젤다, 에그맨(로보트닉), 괴도 키드, 타노스, 미츠히코, 하이바라, 아이언맨, 사토 형사, 그리고 루기나는 피치의 성대한 파티에 참석하였다.
참여 인원은 피치와 시중을 드는 키노 영감까지 모두 20명이다.
하지만, 이들 중에서 젤다, 타노스, 아이언맨과 루기나는 현재 '토비병'에 감염된 상태이다.
이 20명의 사람들이 다른 사람들에게 병을 옮길 확률은 50%이고,
그리고 20명의 사람들 모두가 5% 면역을 갖고 있다.
이대로 파티를 진행할 때,
1. 링크가 병에 감염될 확률은?
2. 사토 형사를 제외하고 모두가 병에 감염될 확률은?
3. 모두가 감염될 확률은?
지금 바로
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