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Function: require_once

수학동아 - 폴리매스
본문바로가기
함께 풀고 싶은 문제
창의력을 기를 수 있는 수학 문제 또는 퍼즐을 내는 곳입니다.
[창의 퍼즐] [조합]영단어 만들기
infinitepi 2020.12.19 17:35 조회 415
문제 푼 사람 2명
공유하기
페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

영어에는 21개의 자음, 5개의 모음이 있다.

이 26개 알파벳으로 영단어를 만든다.

그런데 모음 뒤에는 모음이 올 수 있지만, 모음이 연속으로 있는 것은 3개까지만 가능하다.

하지만 자음 뒤에는 무조건 모음이 와야 한다.

이때, 알파벳 6개 짜리 단어는 몇개 만들수 있을까?

(풀이필수)

 

(이는 실제에는 적용 안되는 규칙이고 문제를 위해 만든 규칙이니 반례 있으면 말해도 되는데

지적하지는 말아주세요-_-)

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