Question

If the sum to n terms of a series be 3(2^n-1).
then it is
(A) AP.
(B) GP
(C) H.P
(D) None of these
​

Answer 1

Answer:

it is gp I think is it write

Answer 2

1st) find the summation terms from the given eqn

2nd) take all the sum series and get the series terms

3) check them about the nature of Series