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Function: model

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Function: getFloatingMyInfo

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/controllers/ver3/Contents.php
Line: 559
Function: get_footer

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/index.php
Line: 315
Function: require_once

수학동아 - 폴리매스
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서울대 몇학번 2020.01.03 04:01 조회 893
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페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

레드벨벳이 'psycho'라는 아름다운 노래를 만들었다  노래가 너무나도 아름다워서 멜론뮤직에서 좋아요에 약107000명을 기록하였다 여기서 레드벨벳이 이벤트를 해서 좋아요를 한 사람중 8명을 뽑아 각각 무작위로 레드벨벳중 한명에게 사인을 받게 된다 나는 좋아요를 했고 슬기를 좋아해서  슬기에게 사인을 받고 싶었다 내가 뽑혀서 슬기에게 사인을 받을 확률의 분모의 약수의 개수는?(풀이 무조건 필수)

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