Correct Answer & Explanation
Option B
The difference between consecutive terms increases by 0.5 each step:
1 + 0.5 = 1.5
1.5 + 1.0 = 2.5
2.5 + 1.5 = 4.0
4.0 + 2.0 = 6.0
6.0 + 2.5 = 8.5
8.5 + 3.0 = 11.5
• Therefore, the missing value is 6.0.