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수학동아 - 폴리매스
본문바로가기
함께 풀고 싶은 문제
창의력을 기를 수 있는 수학 문제 또는 퍼즐을 내는 곳입니다.
[창의 퍼즐] 친구 수
△π 2020.04.08 20:09 조회 530
문제 푼 사람 0명
공유하기
페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

폴리매스 1위부터 20위까지 모임을 가졌다(아싸 나도 간다)

이 곳에서 원래 알고 있던 사람이 몇명인지 질문하였다.(다음 내용은 허구입니다,)

그러자 20등까지의 사람들이 모두 다른 수를 불렀다.(물론 삼각파이는 20ㅋㅋ)

여기서 모순되는 점 2가지를 구하시오.

이 문제 어떠셨나요?

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  •  
    MathlabJ Lv.8 2020.04.08 20:11 비밀댓글
    비밀 댓글이 등록 되었습니다.
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    •  
      △π Lv.9 2020.04.08 20:12

      삼각파이는 이 중에서 20명을 알고있다는 것이겠죠?

      참고로 문제에 넣지 않은 내용이 있는데, 9명이라고 부른 사람은 없습니다...

      좋아요0
  •  
    부분해결
    MathlabJ Lv.8 2020.04.08 20:14 비밀댓글
    비밀 댓글이 등록 되었습니다.
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    •  
      △π Lv.9 2020.04.08 20:15

      좋아요0
  •  
    MathlabJ Lv.8 2020.04.08 20:17 비밀댓글
    비밀 댓글이 등록 되었습니다.
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