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[창의 퍼즐] [경우의수]책과 지진
K→C≡N 2020.05.24 07:20 조회 831
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공유하기
페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

책 10권이 쌓여있다.

지진이 나서 흐뜨러졌다.

밑에있던책이 위로갈순 없지만

한 더미로있던 책들이 여러더미로 흩어질순 있다.

총 몇개의 경우의수가 있을까(1개씩 10더미도 되고 10개로 1더미도 되요)

 

 

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    아인수타인 Lv.12 2020.05.25 02:47 비밀댓글

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    •  
      K→C≡N Lv.11 2020.05.25 04:34

      전 기호 몰라요...

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    아인수타인 Lv.12 2020.05.25 02:48 비밀댓글
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