1.

If nth term of series is 2^(n) + n, then sum of n terms=

Answer»

`N(2^(n) - 1) + n(n + 1) `
`2(2^(n)-1) // 2 + n(n + 1)//2`
`2(2^(n) - 1) + n(n + 1)//2`
none

Answer :C


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