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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] 옆에 문제 풀다가 생각난 문제
켋 2020.03.06 21:43 조회 511
문제 푼 사람 0명
공유하기
페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

70은 상당히 특이한 성질을 가지고 있는 수입니다.

각 자리수의 합이(7 + 0) 70을 영어로 바꿨을때 나오는 글자수와 일치하죠(s e v e n t y = 7)

이런 성질을 가진 글자는 100 이하에 모두 몇개가 있을까요?

이 문제 어떠셨나요?

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어려워요

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댓글 9
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  •  
    켋 Lv.7 2020.03.06 22:05 비밀댓글
    비밀 댓글이 등록 되었습니다.
    댓글 작성하기 댓글수0
  •  
    다시 도전
    † J.H † Lv.9 2020.03.07 03:31 비밀댓글
    비밀 댓글이 등록 되었습니다.
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    •  
      켋 Lv.7 2020.03.07 03:33 비밀댓글
      비밀 댓글이 등록 되었습니다!
    •  
      † J.H † Lv.9 2020.03.07 03:33

      아닌가요?

      좋아요0
  •  
    켋 Lv.7 2020.03.07 03:33

    참고로

    40=forty

    80=eighty,

    90=ninety입니다

    댓글 작성하기 좋아요0 댓글수1
    •  
      † J.H † Lv.9 2020.03.07 03:34 비밀댓글
      비밀 댓글이 등록 되었습니다!
  •  
    † J.H † Lv.9 2020.03.07 03:34 비밀댓글
    비밀 댓글이 등록 되었습니다.
    댓글 작성하기 댓글수2
    •  
      켋 Lv.7 2020.03.07 03:35 비밀댓글
      비밀 댓글이 등록 되었습니다!
    •  
      켋 Lv.7 2020.03.19 02:23

      이것도 까먹으셨다..

      좋아요0
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