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help in probabilites and factorial

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imanemekouar
Students
 
Posts: 24
Joined: Thu Sep 03, 2009 2:09 am
 

help in probabilites and factorial

by imanemekouar Tue Jan 19, 2010 1:17 am

Please can somebody helps.

I have a big problem with probability. I don't know should a use factorial or,when should a use probability . Can you please explain that?
Ben Ku
ManhattanGMAT Staff
 
Posts: 817
Joined: Sat Nov 03, 2007 7:49 pm
 

Re: help in probabilites and factorial

by Ben Ku Thu Jan 21, 2010 2:26 am

I recommend going through this tutorial:

http://www.manhattangmat.com/tutorials/ ... bility.cfm
Ben Ku
Instructor
ManhattanGMAT
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