The sum of an infinite geometric series is 2 and the sum of geometric series made from the cube of this infinite series is 24. Then the series is

Question

The sum of an infinite geometric series is

2

and the sum of geometric series made from the cube of this infinite series is

24 .

Then the series is

3 + \frac{3}{2} - \frac{3}{4} + \frac{3}{8} +

...

3 + \frac{3}{2} + \frac{3}{4} + \frac{3}{8} +

....

3 - \frac{3}{2} + \frac{3}{4} - \frac{3}{8} +

....

None of these

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