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      Question

      4 12 ? 144 544 2112

      Directions (Q.51 - 55): What should come in place of the question mark (?) in the following number series?
      A 22 Correct Answer Incorrect Answer
      B 40 Correct Answer Incorrect Answer
      C 33 Correct Answer Incorrect Answer
      D 25 Correct Answer Incorrect Answer
      E 15 Correct Answer Incorrect Answer

      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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