combination

This topic has expert replies
Master | Next Rank: 500 Posts
Posts: 162
Joined: Mon Jul 28, 2008 8:33 pm
Location: San Jose,CA
Thanked: 1 times

combination

by ddm » Fri Aug 01, 2008 1:20 pm
A certain company employs 6 senior officers and 4 junior officers. If a committee has to be created which is made of 3 senior officers and 1 junior officer,how many different committees are possible?

A.8
B.24
C.28
D.80
E.210

OA = 80
Source: — Problem Solving |

Senior | Next Rank: 100 Posts
Posts: 75
Joined: Sun Jun 22, 2008 4:59 am
Thanked: 2 times

by dbart06 » Fri Aug 01, 2008 1:38 pm
senior officers 6c3 = 20
junior officers 4c1 = 4

total is 20 * 4 = 80

Order they are chosen is not important