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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/controllers/ver3/Contents.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
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Function: require_once
수학동아 - 폴리매스
함께 풀고 싶은 문제
창의력을 기를 수 있는 수학 문제 또는 퍼즐을 내는 곳입니다.
수학날강두
2020.05.15 01:56
조회 607
꼬마 날강두를 비롯한 16명의 학생들이 30문제 입학시험을 쳤는데 16명은 15문제 이상 문제를 맟추었고, 각 문제당 8명 이하의 학생들이 맞추었다고 한다.
이때, 임의의 두 학생을 골랐을 때, 그 두 학생이 공통으로 맞춘 문제는 항상 n개 였다고 한다. 이때, n 을 구하시오.
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수킹
Lv.6
2020.05.15 08:06
아 그리고 말머리를 달아주세요
참고로 공지사항을 보면 쓰는 방법이 나와있어요.
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아인수타인
Lv.12
2020.05.15 08:19
좋아요0
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수킹
Lv.6
2020.05.15 08:26
ok
좋아요0
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수킹
Lv.6
2020.05.15 08:07
비밀댓글
확인요청중
비밀 댓글이 등록 되었습니다.
-
때까치
Lv.5
2020.05.15 23:17
이거 항상 같은 수가아닌데여? 8명이 모두 1~15번을 맞췄고 나머지 8명이 16~30번을 맞춘 경우등 경우도 너무 많고...
지금 바로
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