Question

5, 15, 45, 135, 405,

Answer 1

This is a geometric sequence since there is a common ratio between each term. In this case, multiplying the previous term in the sequence by

3 which gives you the next term

Answer 2

5,15,45,135,405,1215,3645.....

Explanation:

Just multiply it by 3

5 X 3 = 15

15 X 3 = 45

45 X 3 = 135

135 X 3 = 405....