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If (1)/(.^(5)C(r))+(1)/(.^(6)C(r))=(1)/(...

If `(1)/(.^(5)C_(r))+(1)/(.^(6)C_(r))=(1)/(.^(4)C_(r))` , then the value of r equals to

A

4

B

2

C

5

D

3

Text Solution

Verified by Experts

The correct Answer is:
B
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