Question

Which geometric series converges?

Answer 1

Let me change the question a bit. What is the rule for the convergence / nonconvergence of a geometric series? It's critically important that you know this rule.

Answer 2

i dont know

Answer 3

Better look up "geometric series" for this vital information.

You could be more specific and look up "convergence of a geometric series."

Answer 4

I'll give a hint to rule some out: if the term inside the series doesn't approach 0 the series has no chance of converging