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      Question

      Select the option that is related to the third term in

      the same way as the second term is related to the first term, and the sixth term is related to the fifth term. 42 : 12 :: 53 : ? :: 81 : 63
      A 18 Correct Answer Incorrect Answer
      B 24 Correct Answer Incorrect Answer
      C 15 Correct Answer Incorrect Answer
      D 20 Correct Answer Incorrect Answer

      Solution

      The second number is the difference between the first number and its reverse. (42 : 18) β†’ 42 - 24 = 18 81 : 63 β†’Β  81 - 18 = 63 53 : ? β†’ 53 - 35 = 18

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