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      Question

      Which number will replace the question mark (?) in the

      following series? 7, 17, 41, 85, _____, 257
      A 147 Correct Answer Incorrect Answer
      B 145 Correct Answer Incorrect Answer
      C 150 Correct Answer Incorrect Answer
      D 155 Correct Answer Incorrect Answer

      Solution

        Here difference is taken

      Practice Next
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