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      Question

      71 81 61 101 51

      181 In each of these questions, a number series is given. In each series, only one number is wrong. Find out the wrong number.
      A 81 Correct Answer Incorrect Answer
      B 61 Correct Answer Incorrect Answer
      C 71 Correct Answer Incorrect Answer
      D 101 Correct Answer Incorrect Answer
      E 51 Correct Answer Incorrect Answer

      Solution

      71 + 10 = 81 81 – 20 = 61 61 + 40 = 101 101 – 80 = 21 21 + 160 = 181

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