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Function: get_footer

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Function: require_once

수학동아 - 폴리매스
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함께 풀고 싶은 문제
창의력을 기를 수 있는 수학 문제 또는 퍼즐을 내는 곳입니다.
[창의 퍼즐] 자리바꾸기
수티브 잡스 2020.03.09 21:51 조회 363
문제 푼 사람 1명
공유하기
페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

수티브의 교실에서 자리를 바꾸는 시간이 되었다.

수티브는 자리가 바뀐다고 좋아했는데 다시 같은 자리가 되어 버렸다.

수티브는 실망해서 다시 한 번 자리를 바꾸고 싶다며 이건 정말 드문 일이라고 했다.

과연 드문 일일까?

확률 계산 부탁합니다.

수티브의 반은 40명이다.

이 문제 어떠셨나요?

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0

어려워요

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  •  
    해결
    sicma Lv.11 2020.03.09 21:53 비밀댓글
    비밀 댓글이 등록 되었습니다.
    댓글 작성하기 댓글수1
    •  
      수티브 잡스 Lv.6 2020.03.09 22:00

      아뇨 맞았긴 한데

      그건 스티브 한명으로 한정했을 떄입니다

      어쨌든 맞았죠

      좋아요0
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