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标题: 请教GWD的两道数学 [打印本页]

作者: violetcxd    时间: 2006-10-23 00:03
标题: 请教GWD的两道数学

if a commitee of 3 pple is to be selected from among 5 married couples so that the committee does not include two people who r married to each other,how many such committees r possible?

A.20

B.40

c50

d80

e120 






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