Question

number series 4,2.5,3.5,6.75,15.5,41.25

Answer 1

solution:

4 × 0.5 + 0.5 = 2.5

2 × 1 + 1 = 3.5

3.5 × 1.5 + = 6.75

6.75 × 2 + 2 = 15.5  

15.5 ×2.5 + 2.5 = 41.25

41.25 ×3 + 3 = 126 .75.

Answer 2

solution:

4 × 0.5 + 0.5 = 2.5

2 × 1 + 1 = 3.5

3.5 × 1.5 + = 6.75

6.75 × 2 + 2 = 15.5  

15.5 ×2.5 + 2.5 = 41.25

41.25 ×3 + 3 = 126 .75.