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      Question

      Select the option in which the numbers are NOT related

      in the same way as are the numbers of the following set. (21, 15, 72)
      A (27, 12, 78) Correct Answer Incorrect Answer
      B (42, 32, 148) Correct Answer Incorrect Answer
      C (28, 24, 104) Correct Answer Incorrect Answer
      D (15, 12, 62) Correct Answer Incorrect Answer

      Solution

      Third number = (First number + Second number) X 2 (21, 15, 72)   = (21 + 15) X 2 = 36 X 2 = 72. (27, 12, 78)   = (27 + 12) X 2 = 39 X 2 = 78 (42, 32, 148) = (42 + 32) X 2 = 74 X 2 = 148.   (28, 24, 104)   = (28 + 24) X 2 = 52 X 2 = 104.   (15, 12, 62) = (15 + 12) X 2 = 27 X 2 = 54 ≠ 62

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