Question

Complete the series 1.5, 2.3, 3.1, 3.9, whats next

Answer 1

1.5, 2.3, 3.1, 3.9

1) 2.3 - 1.5=0.8

2) 1.5+0.8=2.3

2.3+0.8=3.1

3.1+0.8=3.9

Every time we add 0.8, so the next term is

3) 3.9+0.8=4.7

Answer 2

4.7

Each term is 0.8 bigger than the previous one.