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수학동아 - 폴리매스
함께 풀고 싶은 문제
창의력을 기를 수 있는 수학 문제 또는 퍼즐을 내는 곳입니다.
[창의 퍼즐] [확률] 폴리매스 캐릭터의 출연율
관종이
2020.05.25 08:56
조회 761
제 엉터리 계산에 의하면 다음 캐릭터들의 출연율이 다음과 같다.
쿠파주니어 50 %
루이지 45 %
로젤리나 45 %
래리 40 %
마리오 30 %
요시 20 %
레미 15 %
루드윅 10 %
이기, 모튼, 로이, 웬디 5 %
쿠파 5 %
피치, 데이지 1 %
과 같다.
관종이가 낼 문제에서는 이번에 출연율이 40 % 이상인 한 캐릭터와 출연율이 30 % 이하인 5명의 캐릭터를 무작위로 선택하여 이번 문제에 출연할 캐릭터를 고를려고 한다.
이때, 출연율이 45% 이상인 캐릭터와 출연율이 한 자리수 인 캐릭터가 나올 확률은?
지금 바로
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