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The value of sum (nC1)^2+( nC2)^2+(nC3)^...

The value of sum `(`nC1)^2+( nC2)^2+(`nC_3)^2+....+(`nCn)^2` is

A

`("^(2n)C_n)^2`

B

`^(2n)C_n`

C

`^(2n)C_n+1`

D

`^(2n)C_n-1`

Text Solution

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The correct Answer is:
D
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