作者AAJJBurnett (叫我投手)
看板Grad-ProbAsk
标题[理工] [机率]-机率
时间Sun Sep 27 21:48:06 2009
suppose that ther are 14 songs on a compact disk(CD) and you like 8
of them. When using the random button selector on a CD player , each
of the 14 songs is played once in a random order .Find the probability
that among the first 2 songs that are played,
(a)You like both of them
(b)You like neither of them
(c)You like exactly one of them
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