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Function: require_once
수학동아 - 폴리매스
함께 풀고 싶은 문제
창의력을 기를 수 있는 수학 문제 또는 퍼즐을 내는 곳입니다.
[창의 퍼즐] 다들 확률문제를 좋아하시는군요...
로보카폴리
2020.04.26 11:21
조회 551
하하 저는 좋아하지 않습니다(???: 좋아하는데요?)
아무튼 저는 확률문제를 좋아합니다(?)
확률문제입니다.
어떠한 정사각형이 주어지고 둘레를 알면 그 정사각형의 넓이를 알 수 있습니다.
또한 어떤 정사각형의 넓이가 주어지면 그 둘레를 알 수 있습니다.
이처럼 a를 알면 b를 알수 있고 b를 알면 a를 알수 있는 것을 쌍방향 관계라고 정의하겠습니다.
(예를들어 1~n까지 의 합을 알면 n을 알수 있고 n을 알면 1~n까지의 합을 알 수 있음으로 n과 1~n까지의 합은 쌍방향 관계입니다)
그렇다면 문제입니다.
1) 수학적으로 쌍방향 관계인것과 아닌것을 3개씩 쓰시오.
2) n,1~n까지의 제곱수의 개수가 쌍방향 관계가 되게 하는 n은?
3) 정사각형에 외접하는 원의 둘레, 정사각형에 내접하는 원에 내접하는 삼각형의 넓이는 쌍방향 관계인가?
4) ∅(n)과 n은 쌍방향 관계인가?
지금 바로
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