Question
4 12 ? 144 544 2112
Directions (Q.51 - 55): What should come in place of the question mark (?) in the following number series?Solution
(4 – 1) × 2² = 12 (12 –2) × 2² = 40 (40 – 4) × 2² = 144 (144 – 8) × 2² = 544 (544 – 16) × 2² = 2112
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