Look at this series: 1.5, 2.3, 3.1, 3.9, . . . What number should come next? - Complete Analogous Pa

Look at this series: 1.5, 2.3, 3.1, 3.9, . . .
What number should come next?

A. 4.2

B. 4.4

C. 4.7

D. 5.1

E. None of the above

Answer: C. 4.7

In this simple addition series, each number increases by 0.8.
Rule = (1st no.) (1st no. + 0.8 = 2nd no.) (2nd no. + 0.8 = 3rd number)...
Now (1.5) (1.5 + 0.8 = 2.3) (2.3 + 0.8 = 3.1) (3.1 + 0.8 = 3.9) (3.9 + 0.8 = 4.7)...
So the anwser is c = 4.7

Posted in: Complete Analogous Pair - Series Completion - Verbal Reasoning