Question

What is the common ratio between successive terms in the sequence?

27, 9, 3, 1, 1/3, 1/9, 1/27, .....

a. -3
b. -1/3
c. 1/3
d. 3

Answer 1

The answer is C.

Hope this helps.

r3t40

Answer 2

c.1/3

Explanation:

To check, multiply 1/3 each time to each number. Note that the first number is 27:

27 x 1/3 = 27/3 = 9

9 x 1/3 = 9/3 = 3

3 x 1/3 = 3/3 = 1

1 x 1/3 = 1/3

etc.

This means that the common ratio decreases by the common multiple of 1/3.

~