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Which geometric series converges?

Which geometric series converges?-example-1

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Answer:

The answer is C! :)

User RandomSeed
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The last series, 6+2+6/9+6/27+..., converges.

A series converges is r<1; in the first series r=1; in the second, r=2; in the third, r=2; and in the last, r=1/3.
User Zeeawan
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