Question

What is the common ratio of the following sequence?

-1, 6, - 36, 216 . . .

r = -6

r = 1296

r = -1

r = 7

Answer 1

r = -6

Explanation:

-1 × -6 = 6

6 × -6 = -36

-36 × -6 = 216

Answer 2

-6

Explanation:

To find the common ratio, take the second term and divide by the first term

6/ -1 = -6

Check the third term and divide by the second term

-36/-6 = -6

And the 4th divided by the third

216/ -36 = -6

The common ratio is -6