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What should come in place of the question mark (?) in the given series?6, 6, 9, 18, 45, ?
Question

What should come in place of the question mark (?) in the given series?
6, 6, 9, 18, 45, ?

A.

140

B.

150

C.

135

D.

145

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

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