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If n in N then value of S=sum(r=0)^n(-1)...

If `n in N` then value of `S=sum_(r=0)^n(-1)^r((`^nC_r)/(`^(r+2)C_r))` is

A

1/n+2

B

n+2

C

2/n+2

D

n+2/2

Text Solution

Verified by Experts

The correct Answer is:
C
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