Look at this series: 0.15, 0.3, ____, 1.2, 2.4, ... What number should fill the blank?

Look at this series: 0.15, 0.3, ____, 1.2, 2.4, ... What number should

1.	Look at this series: 0.15, 0.3, ____, 1.2, 2.4, ... What number should fill the blank?
Answer» This is a simple multiplication series. Each number is 2 times greater than the previous number.