问一道prep数学统计题

lucky_fs · 发表于 2009-9-15 21:04:00

A certain law firm consists of 4 senior partners. How many different groups of 3 partners can be formed in which at least one member of the group is a senior partner(two group are considered different if at least one group member is different)?

大家帮忙看下把谢谢啦

lucky_fs · 发表于 2009-9-15 22:54:00

有没有同志帮我解答一下哈，好着急呀，自己顶

问一道prep数学统计题

问一道prep数学统计题

所属分类: GMAT考试

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