Question

What should come in place of question mark '?' in the following number series?

120 60 90 ? 787.5 3543.75

A 320 Correct Answer Incorrect Answer
B 840 Correct Answer Incorrect Answer
C 365 Correct Answer Incorrect Answer
D 225 Correct Answer Incorrect Answer
E None of these Correct Answer Incorrect Answer

Solution

120 × 0.5 = 60 60 × 1.5 = 90 90 × 2.5 = 225 225 × 3.5 = 787.5 787.5 × 4.5 = 3543.75

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