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jcnissi: Junior | Next Rank: 30 Posts; Posts: 18; Joined: Sat Jun 12, 2010 10:17 pm; Thanked: 1 times

by jcnissi » Sat Jun 12, 2010 11:27 pm

How many different groups of 3 people can be formed from a group of 5 people?

a. 5
b. 6
c. 8
d. 9
e. 10

Source: Beat The GMAT — Problem Solving | Sat Jun 12, 2010 11:27 pm

gmatmachoman: Legendary Member; Posts: 2326; Joined: Mon Jul 28, 2008 3:54 am; Thanked: 173 times; Followed by:2 members; GMAT Score:710

by gmatmachoman » Sat Jun 12, 2010 11:45 pm

jcnissi wrote:How many different groups of 3 people can be formed from a group of 5 people?

a. 5
b. 6
c. 8
d. 9
e. 10

5 C 3 ways can be formed:

5 * 4 * 3/(1* 2 * 3)

=10 Pick E

outreach: Legendary Member; Posts: 748; Joined: Sun Jan 31, 2010 7:54 am; Thanked: 46 times; Followed by:3 members

by outreach » Sun Jun 13, 2010 12:55 am

E is correct

jcnissi wrote:How many different groups of 3 people can be formed from a group of 5 people?

a. 5
b. 6
c. 8
d. 9
e. 10

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