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      Question

      What will come in place of the question mark (?) in the

      following series? 20, 21, 30, 55, 104, 185, ?
      A 326 Correct Answer Incorrect Answer
      B 316 Correct Answer Incorrect Answer
      C 306 Correct Answer Incorrect Answer
      D 300 Correct Answer Incorrect Answer
      E 346 Correct Answer Incorrect Answer

      Solution

      20 + 12 = 21 21 + 32 = 30 30 + 52 = 55 55 + 72 = 104 104 + 92 = 185 185 + 112 = 306

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