1.

(.^(n)C_(0))^(2)+(.^(n)C_(1))^(2)+(.^(n)C_(2))^(2)+ . . .+(.^(n)C_(n))^(2) equals

Answer»

`.^(2n)C_(N)`
`((2n-1)!)/(((n-1)!)^(2))((2)/(n))`
`(n!)^(2)`
`(.^(.2n)C_(n))^(2)`

Answer :A::B


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