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Function: driver
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Function: require_once
수학동아 - 폴리매스
함께 풀고 싶은 문제
창의력을 기를 수 있는 수학 문제 또는 퍼즐을 내는 곳입니다.
cjmoon
2020.03.07 18:15
조회 336
1. 14면체 주사위 두개를 던졌을 때 나온 주사위 눈의 합이
짝수이고, 곱은 훌수일 확률을 구하라.
2. 1부터 9까지 적힌 카드 9장이 있다. 이 중 아무 카드나
3개를 뽑아서 세 자리 자연수를 만들어야 한다. 만든
수 중에서 478보다 작은 짝수는 몇 개일까?
3. A 왕국, B 왕국, C 왕국이 전쟁을 벌였다.
세 나라는 대포를 가지고 싸우려고 하고 있다.
A 왕국 대포는 명중율이 89%다. B 왕국 대포는
명중율이 67% 이고, C왕국의 대포는 명중 실패 확률이 90% 다
만약 동시의 대포를 쏜다고 했을 때 A 왕국, B 왕국, C 왕국에
살아남을 확률은 각각 몇%인가. 단, 대포는 두 발만 쏠 수 있다.
답과 풀이는 공개댓글로 해주세요.
-
수학날강두
Lv.5
2020.03.07 21:41
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