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      Question

      69 73 64 80 ?

      91
      A 85 Correct Answer Incorrect Answer
      B 87 Correct Answer Incorrect Answer
      C 89 Correct Answer Incorrect Answer
      D 91 Correct Answer Incorrect Answer

      Solution

      Pattern of this series:
      + 22 , – 32 , + 42 , – 52 , + 62

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