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The sum 1 + 3 + 3^(2) + …+ 3^(n) is ...

The sum ` 1 + 3 + 3^(2) + …+ 3^(n)` is equal to

A

`3^(n-1)`

B

`(3^(n+1) -1)/(2)`

C

`3^(n+1) -1`

D

`3^(n)`

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AAKASH INSTITUTE-SEQUENCES AND SERIES -Assignment (SECTION - A) One option is correct
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