수학동아 - 폴리매스

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함께 풀고 싶은 문제

창의력을 기를 수 있는 수학 문제 또는 퍼즐을 내는 곳입니다.

[창의 퍼즐] 팔찌를 차는 방법 3

지구 2020.03.31 05:30 조회 318

문제 푼 사람 0명

페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

오른팔과 왼팔이 있고,

n개의 서로다른 팔찌를 두 팔에 채우려고 합니다.

각 팔찌를 채웠을 때, 위치는 모두 다르다고 할 때,

팔찌를 차는 경우의 수는 얼마 일까요?

(단, 한 팔 또는 두 팔에 찬 개수가 0이어도 된다.)

(풀이 필수)

이전글 팔찌를 차는 방법 2

다음글 재도배

이 문제 어떠셨나요?

글쎄요

어려워요

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로보카폴리 Lv.11 2020.03.31 08:50 비밀댓글

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