GWD MATH 5-3

queenie924

Q3:
If a committee of 3 people is to be selected from among 5 married couples so that the committee does not include two people who are married to each other, how many such committees are possible?
A. 20
B. 40
C. 50
D. 80
E. 120
答案是D

如何解，向大家请教！谢谢