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Let (1 + x)^(n) = sum(r=0)^(n) C(r) x^(r...

Let `(1 + x)^(n) = sum_(r=0)^(n) C_(r) x^(r)` and ,
`(C_(1))/(C_(0)) + 2 (C_(2))/(C_(1)) + (C_(3))/(C_(2)) +…+ n (C_(n))/(C_(n-1)) = (1)/(k) n(n+1)`,
then the value of k, is

A

`(n)/(2)`

B

`n(n+1)`

C

`(1)/(2)n(n+1)`

D

`(1)/(12) n(n+1)`

Text Solution

Verified by Experts

The correct Answer is:
c
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