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Given positive integers rgt1,ngt2 and th...

Given positive integers rgt1,ngt2 and the cofficients of (3r)^(th )` and `(r+2)^(th)` term in the expansion of `(1+x)^(2n)` are equal then, which of the following relation is correct?

A

`n=3r`

B

`n=2r+1`

C

`n=2r-1`

D

`n=2r`

Text Solution

Verified by Experts

The correct Answer is:
D
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