A committee of 4 people is to be selected from 6 people. How many different committees are possible? Choices:
A) 28
B) 40
C) 56
D) D.168
E) 15
Because the order does not matter in selecting 4 people for the committee, this is a combination question.   The number of ways to select 4 people from 6 = 6C4 = 6!/4!*2! = 15. Hence 15.
<result>E</result>
A committee of 4 people is to be selected from 6 people. How many different committees are possible?