1.

C_0+4. C_1 + 7. C_2+…...(n+1) terms =

Answer»

`(3N +2).2^(n-1)`
`(2N + 2).2^(n-1)`
`(2n + 2).3^(n-1)`
`(2n - 2).3^(n+1)`

ANSWER :A


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