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Function: driver
File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Cacher.php
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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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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.
켋
2020.09.02 02:25
조회 639
놀라운 사실 1: 한 변의 길이가 같은 정n각형은 정(n+1)각형 내부에 내접할 수 있다.
도형의 무한한 모임 D(n)(n은 자연수)를 정의합니다: D(i+1) = D(i)가 한 변의 길이가 r인 도형에 내접한 도형, D(1) = 한 변의 길이가 r인 정삼각형
x가 양의 무한대로 발산하는 D(x)에 다트를 던졌을 때, (빗나가지 않는다고 하면) 다트가 정 홀수 각형에 꽃힐 확률은 얼마입니까? (단, 변의 수가 작은 도형이 위로 온다. 즉, D(2)의 정삼각형 안에 꽃힌 다트는 정사각형이 아닌 정삼각형에 꽃힌 것으로 봅니다.)
P.S. 답은 저도 모릅니다. 따라서 풀이를 정확히 기재하셔야 해결을 드릴 수 있음.
지금 바로
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