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      Question

      Find the wrong number in the given number series.

      12, 21, 5, 38, 2, 71
      A 2 Correct Answer Incorrect Answer
      B 38 Correct Answer Incorrect Answer
      C 12 Correct Answer Incorrect Answer
      D 21 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      ATQ,

      12 + (3)² = 21

      21 - (4)² = 5

      5 + (5)² = 30

      30 - (6)² = -6

      -6 + (7)² = 43

      So, 30 should be in place of 38.

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