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Function: mkdir

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
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File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/controllers/ver3/Contents.php
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Function: parseLatexImg

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/controllers/ver3/Contents.php
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Function: getLatexImg

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Function: parseLatexImg

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Function: initBoardView

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Function: require_once

수학동아 - 폴리매스
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함께 풀고 싶은 문제
나도 수학쌤 문장제 문제를 변형해 문제를 내는 곳입니다.
[문장제 문제&개념응용] [조합]점화식 문제
짱수학천재 2021.01.28 08:46 조회 493

1,2,3,4,5,6으로만 숫자를 채워야하는 n자리수가 있다(ex:2341563,234)

여기서, n자리수를 만드는 경우의 수 중 1,2,3,4,5가 2번 연속하면 안되는 경우의 수를 a_{n}이라고 할때, a_{n}의 점화식을 구하시오.

(정말 오랜만에 문제를 내요... 많은 참여 부탁드립니다!!)

이 문제 어떠셨나요?

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어려워요

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  •  
    다시 도전
    원파 Lv.9 2021.01.28 08:53 비밀댓글
    비밀 댓글이 등록 되었습니다.
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    •  
      짱수학천재 Lv.7 2021.01.28 08:56

      죄송해요.. 제가 문제를 잘못 냈네요,....

      앞으로는 다시는 이런 실수 안 할 게요..

      수정 완료 했습니다!!

      좋아요0
  •  
    해결
    원파 Lv.9 2021.01.28 08:58 비밀댓글
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    •  
      짱수학천재 Lv.7 2021.01.28 09:02 비밀댓글
      비밀 댓글이 등록 되었습니다!
  •  
    원파 Lv.9 2021.01.28 09:06 비밀댓글
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