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      Question

      Four number-pairs are given, three of them are alike in

      a certain manner and one is different. Choose the different number-pair.
      A 17: 272 Correct Answer Incorrect Answer
      B 11: 110 Correct Answer Incorrect Answer
      C 24: 552 Correct Answer Incorrect Answer
      D 15: 250 Correct Answer Incorrect Answer

      Solution

      In each option, the 1st number is multiplied by the number immediately less than the 1st number (n x (n – 1) to obtain the 2nd number. In option (a): 17: 272 = (17 x 16) = 272 In option (b): 11: 110 = (11 x 10) = 110 In option (c): 24: 552 = (24 x 23) = 552 In option (d): 15: 250 = (15 x 14) = 210 In option (d), the product of 15 and 14 is 210, not 250. Hence, option d.

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