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Function: driver
File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Cacher.php
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Function: initiateCache
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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/libraries/Common.php
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Function: model
File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
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Function: getFloatingMyInfo
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Line: 559
Function: get_footer
File: /volume1/web/PhpstormProjects/www_polymath_co_kr/index.php
Line: 315
Function: require_once
수학동아 - 폴리매스
함께 풀고 싶은 문제
창의력을 기를 수 있는 수학 문제 또는 퍼즐을 내는 곳입니다.
아엘
2021.01.25 07:29
조회 391
손 1개로 숫자 10까지 표시하려고한다.
1은 주먹에서 손가락을 하나 펴 표시할 수 있고
2는 1을 표시한 손에서 하나를 더 펴 표시한다
3은 2를 표시한 것에서 손가락 하나를 더 펴 표시할 수있다. (4도 같은 방법)
....5는 다섯 손가락을 다 피면 표시가 된다.
6은 5를 표시하려고 핀 다섯 손가락 중 하나를 접어 표시한다. (이때 6을 표시한 손은 4를 표시한 손과 같으면 안된다.)
7은 6을 표시한 손에서 하나를 더 접어서 표시한다. (이때 7을 표현한 손은 3을 표시한 손과 같으면 안된다.)
8도 하나를 접고 2와 같으면 안되고
9도 하나를 더 접고 1과 같으면 안된다.
10은 손가락을 다 접으면 표현된다.
이때 1부터 10까지 한 손으로 표현할 수 있는 방법은 몇가지인가?
(문제 오류 있으면 말해주시고 난이도 지적하시면 문제 내리겠습니다. :D)
지금 바로
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