Algebra

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29 Feb 2012 18:39:14 IST
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Engineering Entrance , JEE Main , JEE Main & Advanced , Mathematics , Algebra

If alpha = mC2 , then find the value of alphaC2. 



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Sumiran agrawal's Avatar

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Joined: 20 Jul 2011
Posts: 256
29 Feb 2012 21:59:46 IST
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 alpha = mC2

            = m! / 2! ( m-2)!

             = m(m-1)/2

alphaC2 = m(m-1)/2 C 2

                

 , this is the answer.

Krishna Gopal Singh's Avatar

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Joined: 29 Dec 2006
Posts: 5535
29 Feb 2012 23:32:39 IST
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Right answer sumiran.



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