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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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Function: _error_handler
File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
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Function: _error_handler
File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
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Function: model
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File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/controllers/ver3/Contents.php
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Line: 799
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File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/controllers/ver3/Contents.php
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Line: 19
Function: _error_handler
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.
관종이
2020.03.12 09:02
조회 446
토비병에 걸리면 병의 증세가 네 4단계로 나뉘어진다.
1단계는 증상이 없는 없음 단계,
2단계는 증상이 가벼운 경증단계,
3단계는 증상이 무거운 중증단계,
그리고 4단계는 생명의 위협이 되는 위중단계이다.
증상의 단계는 매일 업데이트가 된다.
1단계에서 2단계로 올라올 확률이 1/3, 2단계에서 내려갈 확률이 1/4, 올라갈 확률이 1/3,
마찬가리로 3단계에서 올라가고 내려간 확률이 2단계로 똑같다.
4단계에서 3단계로 내려갈 확률은 1/2이다.
현재 마리오는 3단계, 루이지는 2단계일때,
5일 후에 마리오가 1단계, 루이지가 3단계가 될 확률은?
지금 바로
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