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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
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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.
space
2020.09.16 01:26
조회 463
36100km²인 정사각형 모양의 땅에서 벼락이 떨어진다
그런데 이 땅 정중앙에는 보물이 있다
보물은 땅 3m 아래부터 있으며, 한번 벼락이 맞은 자리는 1m가 파인다
보물이 높이 30cm, 가로 50cm, 세로 20cm라고 할 때 보물이 벼락 맞아 폭파할 확률을 구해라(단, 벼락의 넓이는 점이고 대각선으로 날아올 수도 있다
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뉴＿턴
Lv.8
2020.09.16 06:39
정확히는 0과 정말 가깝겠지만 확실한건 죽었다 깨어나는 일을 1000번 반복해도 그런 일은 없을거라는 것..ㅋㅋㅋ
지금 바로
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