Question

How do you find the common ratio of a geometric sequence?

Answer 1

Take any term (that's not the first term) and divide it by the previous term to find the common ratio.

Answer 2

Does that mean that there is no common ratio for this?: 12, 22, 32, 42,...

Answer 3

Yes because 22/12 = 1.833... but 32/22 = 1.4545...

So there is no common ratio

But...

There is a common difference. This common difference is 10 since subtracting the previous term from each term gives you 10.

So this is an arithmetic sequence.

Answer 4

Thanks! (:

Answer 5

sure thing