Question

3, 12, 22, 33, 45, 58, 72, ?

Answer 1

Explanation:

So this is a quadratic sequence.

3, 12, 22, 33, 45, 58, 72

9 10 11 12 13 14

9, 10, 11, 12, 13, 14

1 1 1 1 1

This means the next one must be 15 so

3, 12, 22, 33, 45, 58, 72, x

9 10 11 12 13 14 15

x= 72+15

x= 87