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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.
원파
2020.12.14 08:34
조회 387
원파는 복불복 사탕을 샀다.
사탕 봉지에는 포도맛 사과맛 슈퍼레몬맛 세 가지 맛의 사탕이 있을 수 있다.
순서대로 점점 신 맛이 강해지고, 제조사에서는 셋 모두 동일한 확률로 사탕 봉지에 포함된다.
어떤 맛이든 복불복 사탕 하나를 난로에 두고 녹이면 15ml의 끈끈한 액체가 된다.
복불복 사탕 한 봉지는 45g 이다.
원파가 1, 2, 3을 세면서 모든 사탕 중 3개의 사탕을 뽑은 후, 처음 것은 본인이 먹고, 두번째는 피르, 마지막은 제로에게 준다.
원파, 피르, 제로 중 가장 신 맛이 강한 사탕을 먹은 사람들을 A 그룹에 속한다고 한다.
예를 들어, 원파가 포도맛, 피르가 사과맛, 제로가 사과맛을 먹으면 피르와 제로는 A 그룹에 속한다.
따라서, A 그룹에는 한 사람만 포함될 수도, 모든 사람이 포함될 수도 있다.
원파가 유일한 A 그룹에 속하는 사람이 될 확률은?
-
NimNim
Lv.9
2021.01.03 20:34
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원파
Lv.9
2021.01.03 20:57
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NimNim
Lv.9
2021.01.05 04:10
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