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      Question

      What will come in place of the question mark (?) in the

      following series? 1.5, 3.5, 9.5, 27.5, 81.5, 243.5, ?
      A 730.5 Correct Answer Incorrect Answer
      B 719.5 Correct Answer Incorrect Answer
      C 729.5 Correct Answer Incorrect Answer
      D 709.5 Correct Answer Incorrect Answer
      E 739.5 Correct Answer Incorrect Answer

      Solution

      1.5, 3.5, 9.5, 27.5, 81.5, 243.5, ? 1.5 × 3 – 1 = 3.5 3.5 × 3 – 1 = 9.5 9.5 × 3 – 1 = 27.5 27.5 × 3 – 1 = 81.5 81.5 × 3 – 1 = 243.5 243.5 × 3 – 1 = 729.5

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