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标题: 一道概率题 [打印本页]

作者: huahua115 时间: 2005-8-16 06:31 标题: 一道概率题

On Saturday morning, Malachi will begin a camping vacation and he will return home at
the end of the first day on which it rains. If on the first three days of the vacation the
probability of rain on each day is 0.2, what is the probability that Malachi will return
home at the end of the day on the following Monday?

A. 0.008
B. 0.128
C. 0.488
D. 0.512
E. 0.640

作者: huahua115 时间: 2005-8-17 06:30

哦，明白了。谢谢！！！！

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