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以下是引用bfghdggf在2004-12-14 11:18:00的发言:
Q7:
There are 11 women and 9 men in a certain club. If the club is to select a committee of 2 women and 2 men, how many different such committees are possible?
A. 120
B. 720
C. 1,060
D. 1,520
E. 1,980
答案是E,我觉得是C11,2*C9,2,望各位指教
根据你的思路, 答案就是E呀, 是不是算错了? |
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