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- Aug 7th 2012, 04:59 AMmathewnarenGeneral
- Aug 7th 2012, 05:15 AMReckonerRe: General
What have you tried? Do you know the formula for a binomial coefficient?

$\displaystyle ^nC_r = \frac{n!}{(n-r)!\ r!}$ - Aug 26th 2012, 10:05 PMlouisejaneRe: General
From what formula is it? Can't see it clearly.

- Aug 28th 2012, 07:29 AMbizworldusaRe: General
nCr=n!/((r!)(n-r!)) with this formula you can try it.

Thank you

Bizworldusa - Aug 28th 2012, 04:01 PMlouisejaneRe: General
Thank you for the formula bizworldusa

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walking bridges - Sep 5th 2012, 03:01 AMkraj8995Re: 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.

- Sep 14th 2012, 11:53 PMmanoj9585Re: General
I think it would be like that :

^{n}C_{r}= n!/{(n-1)! r!}

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