수학동아 - 폴리매스

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함께 풀고 싶은 문제

창의력을 기를 수 있는 수학 문제 또는 퍼즐을 내는 곳입니다.

[창의 퍼즐] [조합]경우의 수

M.Poseidon 2020.05.22 22:19 조회 646

문제 푼 사람 0명

페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

집합 {2,4,6,8,10,........,48,50} 에서 하나의 수를 뽑아서 a라 하고, 다시 하나의 수를 더 뽑아서 b라 하자.(단, a와 b는 같을 수 있다.) a가 b의 약수가 되는 순서쌍 (a,b)의 개수를 구하여라.

이전글 [조합]경우의 수

다음글 [계산] 토끼와 거북이

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