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If .^n Pr=^n P(r+1) and .^n Cr=^n C(r-1...

If `.^n P_r=^n P_(r+1)` and `.^n C_r=^n C_(r-1,)` then the value of `n+r` is.

A

2

B

3

C

4

D

5

Text Solution

Verified by Experts

The correct Answer is:
B
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