Correct Answer - Option 2 : 7.5
Calculation:
Considering the above series,
5, 3, 4, ?, 17, 45
The logic of the series can be explained as,
5 × 0.5 + 0.5 = 3
3 × 1 + 1 = 4
4 × 1.5 + 1.5 = 7.5
7.5 × 2 + 2 = 17
17 × 2.5 + 2.5 = 45
∴ The value of (?) is 7.5