Question

What is the common ratio between successive terms in the sequence 2 - 4 8 -16 32 -64

Answer 1

The common ratio of the sequence is -2.

Explanation:

To find the common ratio of a sequence, we divide each term by it's predecessor.

So

-4/2 = 8/-4 = -16/8 = ... = -2

The common ratio of the sequence is -2.