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Function: driver
File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Cacher.php
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Function: initiateCache
File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/controllers/ver3/Contents.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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Line: 559
Function: get_footer
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Line: 315
Function: require_once
수학동아 - 폴리매스
함께 풀고 싶은 문제
창의력을 기를 수 있는 수학 문제 또는 퍼즐을 내는 곳입니다.
jeuno
2019.11.10 10:13
조회 1075
위 그림에서 각 선 하나당 성냥개비 하나(곱셈 기호, 등호 포함)라고 하자.
1. 성냥개비 2개를 제거하고 2개를 움직여서 식을 성립시켜라. (단, 등호는 건드릴 수 없다.)
2. 성냥개비 2개를 움직여서 식을 성립시켜라. (단, 등호는 건드릴 수 없다.)
3. 성냥개비 3개를 움직이고 1개를 추가하여 식을 성립시켜라. (단, 등호는 건드릴 수 없다.)
4. 성냥개비 4개를 움직여서 식을 성립시켜라. (단, 등호는 건드릴 수 없다.)
{혹시 오해가 생길 수 있어서 적어둡니다. 이 네 문제는 모두 처음 상태(9x4=3)에서 푸는 겁니다, 1번의 결과에서 2번을 풀고 2번의 결과에서 3번을 풀고 하는 것이 아닙니다!}
일단, 거의 모든 문제는 답을 하나로 생각하고 냈지만, 정답은 여러개가 나올 수 있습니다.
[현재까지 1,2,3번은 1가지, 4번은 2가지의 답이 나옴을 확인 했습니다.]
[hint: 답은 꼭 사칙연산이 아닐 수도 있습니다.]
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GUN.007
Lv.11
2019.11.11 03:00
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확인요청중
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jeuno
Lv.5
2019.11.11 06:17
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