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      Question

      18      19      34      111       428   

         2165       ? What will come in place of question mark (?) in the following number series?
      A 11945 Correct Answer Incorrect Answer
      B 12896 Correct Answer Incorrect Answer
      C 13026 Correct Answer Incorrect Answer
      D 12954 Correct Answer Incorrect Answer

      Solution

      × 1 + 1², × 2 - 2², × 3 + 3², × 4 - 4², × 5 + 5², × 6 - 6²

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