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      Question

       7        12         33        126     

        635     
      A 7 Correct Answer Incorrect Answer
      B 12 Correct Answer Incorrect Answer
      C 33 Correct Answer Incorrect Answer
      D 126 Correct Answer Incorrect Answer
      E 635 Correct Answer Incorrect Answer

      Solution

      7 × 2 – 2 = 12 12 × 3 – 3 = 33 33 × 4 – 4 = 128 128 × 5 – 5 = 635

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