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If .^(n+1)C(r+1):^(n)C(r):^(n-1)C(r-1)=1...

If `.^(n+1)C_(r+1):^(n)C_(r):^(n-1)C_(r-1)=11:6:3`, find the values of n and r.

A

20

B

30

C

0

D

50

Text Solution

Verified by Experts

The correct Answer is:
c
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