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Function: driver
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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
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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.
[창의 퍼즐] [정수] 예전에 한번쯤은 풀어봤을만한 문제
어떤 교도소가 있었다. 전체 1/5의 모범수를 석방시키고 태도가 안 좋은 2명을 다시 수감시켰다.
15명이 탈옥했지만 다시 그 중 3/5를 잡았다.
남은 죄수들 중 1/3을 석방시키고 10명을 수감시켰더니 50명이 되었다.
이때, 처음보다 죄수가 얼마나 늘거나 줄었는지 구하여라.
(풀이필수)
-
DeltaX
Lv.3
2020.07.26 05:29
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-
전자기역학
Lv.8
2020.07.26 05:35
신입이시라 잘 모르시는 것 같은데 알려드릴 것이 하나 있습니다.
저희 규정 중 '너무 쉬운 문제는 내지도 않고, 풀지도 않는다'라는 규정이 있습니다.
그러니 이런 단순문제는 풀지 말라고 하고 싶습니다.
좋아요2
-
외계파이
Lv.4
2020.07.28 20:17
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