C1/C0 + 2C1/C2 + 3C3/C2 + …..+ NCn/Cn-1 = N(n+1)/2 Prove This ...

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question markC1/C0 + 2C1/C2 + 3C3/C2 + …..+ nCn/Cn-1 = n(n+1)/2 prove this when C1,C2,C3......Cn represents the coefficients of (1+x)^n.
Meghendra Agrawal , 7 Years ago
Grade anser 1 Answers
Arun
Dear Meghendra Its general term = r * nCr / nCr-1 hence r * (n – r + 1 )/ r n – r + 1 now after summation you get = n (n + 1)/2 RegardsArun Last Activity: 7 Years ago star
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