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      Question

      Complete the analogy. 81 : 45 :: 72 :

      ?
      A 55 Correct Answer Incorrect Answer
      B 45 Correct Answer Incorrect Answer
      C 50 Correct Answer Incorrect Answer
      D 48 Correct Answer Incorrect Answer

      Solution

      The sum of the digits of the 1st number is multiplied by 5 to obtain the 2nd number. 81 : 45 тЖТ (8+1) = 9,(9 ├Ч 5) = 45 Similarly, 72 : ? тЖТ (7 + 2) = 9,(9 ├Ч 5) = 45.

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