1.

Prove that following i) 2.C_(0)+5.C_(1)+8.C_(2)+…..+(3n+2)C_(n)=(3n+4).2^(n-1)

Answer»

`(4 -3N).2^(2n-1)`
`(4 - 3n).2^(n+1)`
`(4 + 3n).2^(n-1)`
`(2-3n).2^(n+1)`

ANSWER :C


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