甲乙丙三人比赛,甲乙先比,然后和丙比,知道有一个人连赢两场,则这个人为冠军,求他们三人各自赢的概率分别是多少?

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• 甲乙丙三人比赛,甲乙先比,然后和丙比,知道有一个人连赢两场,则这个人为冠军,求他们三人各自赢的概率分别是多少?
• 甲乙丙三人比赛,甲乙先比,然后和丙比,知道有一个人连赢两场,则这个人为冠军,求他们三人各自赢的概率分别是多少?
• 若有十个小球,三黄七白,从中取两次,允许取后放回,求取出小球为一黄一白的概率?
• 一道英文数学概率题A box contains 4 black cubes and 6 white cubes.A cube is drawn from the box.Its colour noted and a cube of the other colour is then added to the box.A second cube is then drawn.(a).If both cubes are of the same colour,what is the probability that both cubes were in fact white?(b).The first ball is replaced before the second ball is added to the box.What is the probability that both cubes were white given that both cubes were of the same colou