GWD 数学题请教

xp635

如题，谢谢

A certain club has 20 members.  What is the ratio of the member of 5-member committees that can be formed from the members of the club to the number of 4-member committees that can be formed from the members of the club?

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A.     16 to 1

B.     15 to 1

C.     16 to 5

D.     15 to 6

                                    E.    5 to 4

 

karen_gao

C 吧,  就是20个人中取5的组合数除以20个人中取4的组合数

xp635

thx