Question
In the following number - pairs, the second number is obtained by applying certain mathematical operations to the first number. Select the set in which the numbers are not related in the same way as are the numbers of the following sets. (15, 240) (18, 342)
Solution
The logic followed here is: Second number = First number X (First number + 1) In (15, 240) → 15 X (15 + 1) = 15 X 16 = 240 In (18, 342) → 18 X (18 + 1) = 18 X 19 = 342 In option 'A', (12, 156) → 12 X (12 + 1) = 12 X 13 = 156 In option 'B', (19, 372) → 19 X (19 + 1) = 19 X 20 = 380 ≠ 372 In option 'C', (23, 552) → 23 X (23 + 1) = 23 X 24 = 552 In option 'D', (28, 812) → 28 X (28 + 1) = 28 X 29 = 812
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