Which is not a geometric progression 4,8,16,32. 3,6,9,12. 2,618,54. 1,5,12,125

see explanation

Step-by-step explanation:

A geometric progression has a common ratio r between consecutive terms

That is each term in the sequence is obtained by multiplying the previous term by r

Consider 4, 8, 16, 32

4 * 2 = 8

8 * 2 = 16

16 * 2 = 32

This is a geometric progression with r = 2

Consider 3, 6, 9, 12

3 * 2 = 6

6 * 2 = 12 ≠ 9

This is not a geometric progression

Consider 2, 6, 18, 54

2 * 3 = 6

6 * 3 = 18

18 * 3 = 54

This is a geometric progression with r = 3

Consider 1, 5, 12, 125

1 * 5 = 5

5 * 5 = 25 ≠ 12

This is not a geometric progression