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      Question

      Find the missing term in the series: 3, 8, 19,

      42, 89, ?
      A 136 Correct Answer Incorrect Answer
      B 145 Correct Answer Incorrect Answer
      C 184 Correct Answer Incorrect Answer
      D 167 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Differences: 8−3 = 5 19−8 = 11 42−19 = 23 89−42 = 47 Pattern in differences: each = (previous difference × 2) + 1 5×2+1 = 11 11×2+1 = 23 23×2+1 = 47 Next difference = 47×2+1 = 95 So next term = 89 + 95 = 184 Answer = 184

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