Question

Please Help!!! Will Medal!!

What is the common ratio in this geometric series?

Answer 1

In the general formula

\[\Large a_{n} = a(r)^{n-1}\]

the variable 'a' is the first term and 'r' is the common ratio

Answer 2

and common ratio is "i"

Answer 3

common ratio is not i

Answer 4

I in this question is N Moe. The sigma is just using a different variable. @jim_thompson5910 has the correct formula.

Answer 5

Well