The sum to infinity of the progression $9 - 3 + 1 - \frac{1}{3} + .....$ is
The sum to infinity of the progression $9 - 3 + 1 - \frac{1}{3} + .....$ is
- A
$9$
- B
$9/2$
- C
$27/4$
- D
$15/2$
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