수학동아 - 폴리매스

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함께 풀고 싶은 문제

나도 수학쌤 문장제 문제를 변형해 문제를 내는 곳입니다.

[문장제 문제&개념응용] 체인 함수

우럭 2021.01.03 02:30 조회 349

문제 푼 사람 0명

페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

함수 f -> f 가 있다. (단, f = (1, 2, 3, 4, 5, 6, 7, 8))

이때, f(a) = b, f(b) = a를 만족하면, 1차 체인이라고 한다.

이런식으로, "체인"에 엮인 수가 n개이면, n-1차 체인인 것이다.

이때, 3차 체인이 나타나지 않는 함수 f -> f의 개수는?

[풀이 필수]

이전글 함수 응용

다음글 [대수]

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