Q37:

A club with a total membership of 30 has formed 3 committees, M, S, and R, which have

8, 12, and 5 members, respectively. If no member of committee M is on either of the

other 2 committees, what is the greatest possible number of members in the club who are

on none of the committees?

A. 5

B. 7

C. 8

D. 10

E. 12

我是这样做的

30-8-12-5=5,可是答案是D

谢谢

说明另外两个committees 重复。