Author Topic: Binomial questions  (Read 795 times)

Offline astarmathsandphysics

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Binomial questions
« on: September 25, 2009, 06:14:15 pm »
nC2/nC3=\frac {n!}{2!(n-2)!}/\frac {n!}{3!(n-3)!}

=\frac {3!(n-3)!}{2!(n-2)!}=\frac {3*2!}{2!}* \frac {(n-3)!}{(n-2)!} =3* \frac {(n-3)!}{(n-2)(n-3)!}=3/(n-2)
« Last Edit: September 25, 2009, 06:19:03 pm by astarmathsandphysics »

Offline Ghost Of Highbury

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Re: Binomial questions
« Reply #1 on: September 25, 2009, 06:18:02 pm »
awesome..thanks a lot sir...!!!
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Offline astarmathsandphysics

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Offline Ghost Of Highbury

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Re: Binomial questions
« Reply #3 on: September 26, 2009, 08:18:44 am »
thanks
divine intervention!