combination

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ddm: Master | Next Rank: 500 Posts; Posts: 162; Joined: Mon Jul 28, 2008 8:33 pm; Location: San Jose,CA; Thanked: 1 times

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

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Source: Beat The GMAT — Problem Solving | Fri Aug 01, 2008 1:20 pm

dbart06: 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

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