GWD7-Q2

evelyn205205 · 发表于 2011-2-10 17:57:46

If 2 different representatives are to be selected at random from a group of 10 employees and if p is the probability that both representatives selected will be women, is p >0.5?
(1)More than 1/2 of the 10 employees are women.
(2)The probability that both representatives selected will be men is less than 1/10.

答案是E。可是我怎么觉得是D呢。stimulus1和2不能成立么？

evelyn205205 · 发表于 2011-2-10 22:23:10

只要p大于0.5就可以了嘛，没有说要求出具体数据。

evelyn205205 · 发表于 2011-2-11 09:53:47

嘿嘿，虚心求教各路牛牛呀~

evelyn205205 · 发表于 2011-2-11 10:09:28

哦，我懂了，这是道组合题，不是排列题吧，呵呵，我前面把两个概念混淆了
谢谢你的耐心解释。

evelyn205205 · 发表于 2011-2-11 11:16:36

THX!

GWD7-Q2

所属分类: GMAT考试

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