Problem Solving

试题详情

题目:

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?

选项:

A、120
B、720
C、1,060
D、1,520
E、1,980

答案:

E

提问:

这个不是应该是11*10*9*8=7920种么
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