What is the common ratio in 1, 3/2,9/4,27/8,81/16,

The common ratio is 3/2

Step-by-step explanation:

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

3/2 : 1 = 3/2

Check by taking the third term and dividing by the second term

9/4 : 3/2

Copy dot flip

9/4 * 2/3

18/12 = 3/2