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    • Question

      21       23       49       152     

       ?       3086 What will come in place of the question mark (?) in the following series?
      A 655 Correct Answer Incorrect Answer
      B 625 Correct Answer Incorrect Answer
      C 605 Correct Answer Incorrect Answer
      D 615 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      21 x 1 + 2 = 23 23 x 2 + 3 = 49 49 x 3 + 5 = 152 152 x 4 + 7 =  615 615 x 5 + 11 = 3086

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