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Jhun 3 years ago find the sum of the given infinite geometric series 1+2/3+4/9... A. 6 B. 3 C. 4 D. 2

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1. Yahoo!

$S \infty =\frac{ a }{ 1-r }$

2. Jhun

I dont know how to plug it in :/

3. Yahoo!

a = i st term r = common ratio ie t2/t1

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