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Sum of the series 1+2.2+3.2^2 +4.2^3+......

Sum of the series `1+2.2+3.2^2 +4.2^3+.....+100.2^99` is

A

`99.2^(100) - 1 `

B

`100.2^(100)`

C

`99.2^(100)`

D

`99.2^(100) + 1`

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