The of infinity series 1-dfrac-3-2-dfrac-5-4-dfrac-7-8- is-2-92-3-2-99-2

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Question

The sum of infinity series $1 - \frac{3}{2} + \frac{5}{4} - \frac{7}{8} -$ ________ is?
$2 / 9$
$2 / 3$
$- 2 / 9$
$9 / 2$

2 / 3

9 / 2

2 / 9

- 2 / 9

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The sum of infinity series $1 - \frac{3}{2} + \frac{5}{4} - \frac{7}{8} -$ ________ is?
$2 / 9$
$2 / 3$
$- 2 / 9$
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