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수학동아 - 폴리매스
본문바로가기
함께 풀고 싶은 문제
창의력을 기를 수 있는 수학 문제 또는 퍼즐을 내는 곳입니다.
[창의 퍼즐] 이상한 횡단보도 신호등
리프 2019.10.03 01:44 조회 946

A는 학교에 가려면 횡단보도를 1개 건너야 한다.

A가 학교에 가던 도중, 횡단보도의 신호등의 숫자가 5인 것을 보고 건너기 위해 뛰어갔다.

그런데 A가 횡단보도의 숫자가 7까지 차례대로 증가하다가 다시 1씩 감소하는 것을 보았다.

 

무슨 일이 일어난 걸까? (단, 횡단보도는 고장나지 않았고, 횡단보도의 신호등은 한국에 있는 횡단보도 신호등과 동일하다.)

 

대표이미지 출처: https://www.pinterest.co.kr/pin/835699274582269005/

이 문제 어떠셨나요?

글쎄요

0

어려워요

0

  •  
    리프 Lv.7 2019.10.03 01:45

    푸신 분은 비밀댓글로 달아주세요. (+실화를 바탕으로 만든 문제입니다. ㅋㅋ)

     

    수정) 문제에서 횡단보도는 고장나지 않았다.를 횡단보도의 신호등은 고장나지 않았다로 수정합니다.

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    •  
      code Lv.5 2019.10.03 04:14 비밀댓글
      비밀 댓글이 등록 되었습니다!
  •  
    cjmoon Lv.6 2019.10.03 04:16 비밀댓글
    확인요청중
    비밀 댓글이 등록 되었습니다.
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  •  
    해결
    로보카폴리 Lv.11 2019.10.03 06:56 비밀댓글
    비밀 댓글이 등록 되었습니다.
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    해결
    komathce Lv.5 2019.10.03 08:55 비밀댓글
    비밀 댓글이 등록 되었습니다.
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  •  
    리프 Lv.7 2019.10.03 09:49

    code, 겔릴레오 갈릴레이, komathce님 모두 정답입니다!

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    해결
    supermathe Lv.6 2019.10.11 00:56 비밀댓글
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    아인수타인 Lv.12 2019.11.16 06:45 비밀댓글
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    해결
    K-RIEMANN Lv.10 2019.11.16 06:50 비밀댓글
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