수학동아 - 폴리매스

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함께 풀고 싶은 문제

창의력을 기를 수 있는 수학 문제 또는 퍼즐을 내는 곳입니다.

[창의 퍼즐] 간단한 문제 13.

켋 2020.03.15 22:22 조회 546

문제 푼 사람 0명

페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

이거 어쩌면 간단문제 서약에 어긋날지도 모르겠군요.

오늘로부터 그저께, 그러니까 2020년 3월 13일은 13일의 금요일으로 불리는 불운한 날이다.

달력의 성질을 이용하여 매년 13일의 금요일이 최소 한번씩은 있음을 증명하시오.

이전글 퍼즐

다음글 간단한 문제 14.

이 문제 어떠셨나요?

글쎄요

어려워요

문제 찜하기 목록보기

댓글 작성하기

GUN.007 Lv.11 2020.03.16 03:07

아, 13일의 금요일 말이시군요

댓글 작성하기 좋아요0 댓글수0

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