Question

Trying to understand where each thing is at on the geometric series/sequence.

Where would I find a1, r, and n on these and what would be the sum of the last one? Is there any calculator I can look up to help me with this thank you!

Answer 1

Generic Sequence: a1, a2, a3, a4, ...
The r-value can be calculated by dividing any two consecutive terms in a geometric sequence, The formula is r(n)= a(n)/a(n-1)
Where n is any positive integer greater than 1.