수학동아 - 폴리매스

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함께 풀고 싶은 문제

창의력을 기를 수 있는 수학 문제 또는 퍼즐을 내는 곳입니다.

[창의 퍼즐] [확률]뽑기 사람 수의 확률

space 2020.09.20 05:13 조회 381

문제 푼 사람 0명

페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

난 200~298명과 뽑기를 한다(200명일 확률+ 201명일 확률+....298명일 확률=100%)

1등 2명

2등 5명

3등 10명

4등 20명

5등 50명이다

그럼 당첨 될 확률은 얼마인가?

이전글 신비한수

다음글 [창의][대수]분침과 시침, 초침

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