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The sum 1+2·3+3 . 3^(2) + ........ +10....

The sum `1+2·3+3 . 3^(2) + ........ +10.3^(9)` is equal to :

A

`(2.3^(12) +10)/4`

B

`(19.3^(10) +1)/4`

C

`5.3^(10) - 2`

D

`(9.3^(10) +1)/2`

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