[讨论]数学Prep破解PS1

geniuswu06

A committee of three people is to be chosen from four married couples.  What is the number of different committees that can be chosen if two people who are married to each other cannot both serve on the committee?

 

(A)  16

(B)  24

(C)  26

(D)  30

(E)  32

yaoyaoyao

是选e吧？从8个人中选取3个减去4*6

halcyonline

从四对夫妇中选三对，再每对选一个人，4*2*2*2=32

florafox

32，这一类的题目我感觉最重要的是迅速理解题意！

cdgavin

先C(4,3)，再运用乘法原理，每一对都有2种选择，所以连乘3次2

所以答案确实是32