# General

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• August 7th 2012, 04:59 AM
mathewnaren
General
• August 7th 2012, 05:15 AM
Reckoner
Re: General
What have you tried? Do you know the formula for a binomial coefficient?

$^nC_r = \frac{n!}{(n-r)!\ r!}$
• August 26th 2012, 10:05 PM
louisejane
Re: General
From what formula is it? Can't see it clearly.
• August 28th 2012, 07:29 AM
bizworldusa
Re: General
nCr=n!/((r!)(n-r!)) with this formula you can try it.

Thank you
Bizworldusa
• August 28th 2012, 04:01 PM
louisejane
Re: General
Thank you for the formula bizworldusa

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walking bridges
• September 5th 2012, 03:01 AM
kraj8995
Re: General
This formula is the basic formula of probability.It is used if we select some items out of many items.It means we are selecting r items out of n items.
• September 14th 2012, 11:53 PM
manoj9585
Re: General
I think it would be like that :

nCr = n!/{(n-1)! r!}

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