作者shiangu (低调的人)
看板GMAT
标题[计量] PP1-PS-17
时间Wed Nov 11 20:57:54 2009
17.
In a certain board game, a stack of 48 cards, 8 of which represent shares of
stock, are shuffled and then placed face down. If the first 2 cards selected
do not represent shares of stock, what is the probability that the third card
selected will represent a share of stock?
A.1/8< 分数>
B.1/6
C.1/5
D.3/23
E.4/23
有哪位同学可以解答一下吗 这题好像没人问ㄟ
是太简单吗 我觉得很难 谢谢啦
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1F：推 musiclife729:8/(48-2)=4/23 11/11 22:16