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A fast food company plans to build 4 new restaurants. If

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Manager
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A fast food company plans to build 4 new restaurants. If [#permalink]

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New post 29 May 2006, 16:43
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

A fast food company plans to build 4 new restaurants. If there are 12 sites that satisfy the company's criteria for location of new restaurants, in how many ways can the company select the 4 sites needed if order does not matter?

a. 48
b. 288
c. 495
d. 990
e. 11,880

Please explain your answer.

Last edited by tl372 on 29 May 2006, 19:00, edited 1 time in total.
Manager
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New post 29 May 2006, 17:08
do you mean 3 or 4? I am sorry, I was not sure if the 3 was typo...

well I am assuming it is a 4..hehee.

12C4 = (12*11*10*9)/(4*3*2*1) = 495

C is my answer
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New post 29 May 2006, 19:01
Sorry, I meant to write 4 sites. I edited the question.
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New post 29 May 2006, 22:30
acfuture wrote:
do you mean 3 or 4? I am sorry, I was not sure if the 3 was typo...

well I am assuming it is a 4..hehee.

12C4 = (12*11*10*9)/(4*3*2*1) = 495

C is my answer

Agree same approach
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New post 29 May 2006, 22:48
The number of ways = 12C4 = 495
  [#permalink] 29 May 2006, 22:48
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A fast food company plans to build 4 new restaurants. If

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