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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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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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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.
원파
2021.04.01 09:16
조회 549
이곳은 평화로운 거미나라.
거미는 다리가 8개여서 신발도 8개가 필요하다.
거미들은 미완성 패션을 그리 즐기지 않는 편이라 8개의 발에 모두 신발을 신을 수 없다면 아무것도 신지 않는다.
스파이더슈즈 회사에서는 N개의 거미슈즈를 생산하였다.
그러나 이 생산과정 중에서 불량품이 몇 개 발생하였으나 발견되지 못한채 함께 판매되었다.
새 거미슈즈들은 삽시간에 팔려나갔다.
단 하루만에 불량품을 제외한 모든 제품들이 판매 완료됐다.
총 101마리의 거미가 신발을 신게 되었고, 판매되지 않은 거미슈즈들은 모두 불량품 뿐이었다.
애초에 불량품이 없었다면 거미 126마리가 거미슈즈를 신을 수 있었을 것이고, 남는 거미슈즈 중 정상제품이 존재하였을 것이다.
N은 소수이며, 어떤 소수 t에 대해 t2번째 소수이다.
t는 7로 나누면 0.538461538461538461538461... 이 된다.
(1) t=?
(2) N=?
(3) 불량품 개수=?
(4) 불량품이 없었다면 남는 정상제품의 개수=?
(풀이필수)
-
-
원파
Lv.9
2021.04.02 05:20
좋아요0
지금 바로
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