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Function: require_once

수학동아 - 폴리매스
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[창의 퍼즐] 뛰어라!! 강아지!!
Sandwich 2021.06.03 00:22 조회 344
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페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

강아지의 운동 상태는 다양한데, 그냥 걷거나 뛰는 것 2가지만 할 수 있는 강아지가 있다고 하자. 이 강아지의 뛸 때 속도는 시속 30km로 유지되다가 6초 뒤에 시속 25km로 감속되고, 걷는 속도는 계속 시속 7km로 유지된다. 강아지가 10초마다 한 번씩 운동 상태를 바꿀 때(꼭 바꾸는 것은 아니고 바꾸는 것이 가능함), 언제나 시속 20km로 뛰는 Sandwich를 앞지를 확률은??

 

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