Question

A small acting club has 5 members. Three of the members are to be chosen for a trip to see a Broadway play. How many different 3-member groups are possible?

Answer 1

z(5 , 3) = 10

Explanation:

x = 5

y = 3

z(x,y) = x/ y(x-y)

z (5, 3) = 5/ 3(5-3)

= 4x5/ 2

= 20/2

z (5- 3) = 10