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수학동아 - 폴리매스
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함께 풀고 싶은 문제
창의력을 기를 수 있는 수학 문제 또는 퍼즐을 내는 곳입니다.
[창의 퍼즐] [확률] 카드 뽑기
Plum 2020.09.01 23:17 조회 475
문제 푼 사람 0명
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페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

1부터 10까지의 카드가 있다.

나와 친구는 동시에 여기서 카드 2장을 뽑는다.

뽑은 카드에 적힌 숫자의 합이 높은 사람이 이긴다.

예를 들어,내가 7,8  친구가 4,10 을 뽑으면

15>14  니까 내가 이긴다.

단, 합이 같은 경우는 무승부이다.

이것을 1번 할때, 내가 이길 확률은?

 

 [풀이 필수 입니다]

이 문제 어떠셨나요?

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  •  
    Plum Lv.7 2020.09.01 23:21

    이거 저도 했긴 했는데 확신이 없어서 올려봅니다. 여러분들의 아이디어를 기다립니다~~  (제가 조합을 못해서<<퍽퍽)

    댓글 작성하기 좋아요0 댓글수0
  •  
    mwryan Lv.6 2020.09.01 23:50

    뽑힌 카드를 또 뽑을 수 있나요?

    댓글 작성하기 좋아요0 댓글수1
    •  
      Plum Lv.7 2020.09.02 00:30

      카드는 동시에 뽑으니까 같은 카드는 못나옵니당   

      좋아요0
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