If overset(n) underset(r=0)Sigma ((r+2)/...

If `overset(n) underset(r=0)Sigma ((r+2)/(r+1))""^(n)C_(r)=(2^(8)-1)/(6)` then n is

A

8

B

4

C

6

D

5

Text Solution

Verified by Experts

The correct Answer is:

D

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