Question
Four number-pairs are given, three of them are alike in
a certain manner and one is different. Choose the different number-pair.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): 14: 182 = (14 x 13) = 182 In option (b): 18: 306 = (18 x 17) = 306 In option (c): 22: 462 = (22 x 21) = 462 In option (d): 25: 650 = (25 x 24) = 600 In option (d), the product of 25 and 24 is 600, not 650. Hence, option d.
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