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      Question

      18, 30, 54, 90, 138,

      ? What will come in place of the question mark (?) in the following series?
      A 236 Correct Answer Incorrect Answer
      B 252 Correct Answer Incorrect Answer
      C 198 Correct Answer Incorrect Answer
      D 120 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      ATQ, 18 + 12 Ă— 1 = 30 30 + 12 Ă— 2 = 54 54 + 12 Ă— 3 = 90 90 + 12 Ă— 4 = 138 138 + 12 Ă— 5 = 198

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