Correct option is C
Given Series:
6, 6, 9, 18, 45, ?
Step-by-step Analysis:
Step 1: Check how each number leads to the next
6 → 6 => ×1
6 → 9 => ×1.5
9 → 18 => ×2
18 → 45 => ×2.5
45 → ? => try ×3
So the pattern is:
45 × 3 = 135
Final Answer: (C) 135