1.

If (1 - x)^(n) = C_(0) + C_(1)x + C_(2)x^(2) + ......... + C_(n)x^(n), then the value of 1.C_(1) + 2.C_(3) + 3.C_(3) + ......... + n.C_(n) =

Answer»

`2^(N) - 1`
`n.(2^(n) - 1)`
`n.2^(n - 1)`
`2^(n)`

ANSWER :C


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