It is currently 21 Oct 2017, 18:42

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# John and Peter are among the nine players a basketball coach

Author Message
Director
Joined: 23 May 2008
Posts: 801

Kudos [?]: 84 [0], given: 0

John and Peter are among the nine players a basketball coach [#permalink]

### Show Tags

30 Aug 2008, 16:11
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

John and Peter are among the nine players a basketball coach can choose from to field a five-player team. If all five players are chosen at random, what is the probability of choosing a team that includes John and Peter?

1/9
1/6
2/9
5/18
1/3

Kudos [?]: 84 [0], given: 0

Director
Joined: 23 Sep 2007
Posts: 782

Kudos [?]: 237 [0], given: 0

### Show Tags

30 Aug 2008, 16:30
bigtreezl wrote:
John and Peter are among the nine players a basketball coach can choose from to field a five-player team. If all five players are chosen at random, what is the probability of choosing a team that includes John and Peter?

1/9
1/6
2/9
5/18
1/3

D

without restrictions, the number of possible combos is C(9,5) = 126

if J and P are on the same team, that leaves the coach to pick 3 out of 7 player, so C(7,3) = 35

35/126 = 5/18

Kudos [?]: 237 [0], given: 0

SVP
Joined: 07 Nov 2007
Posts: 1792

Kudos [?]: 1063 [0], given: 5

Location: New York

### Show Tags

31 Aug 2008, 22:27
bigtreezl wrote:
John and Peter are among the nine players a basketball coach can choose from to field a five-player team. If all five players are chosen at random, what is the probability of choosing a team that includes John and Peter?

1/9
1/6
2/9
5/18
1/3

p= (2C2*7C3) / 9C5 = 5/18
_________________

Smiling wins more friends than frowning

Kudos [?]: 1063 [0], given: 5

Re: mgmat probability   [#permalink] 31 Aug 2008, 22:27
Display posts from previous: Sort by