Question
Four number-pairs are given, out of which three are
alike in certain manner and one is different. Choose the different number-pair.Solution
The pattern followed here is: The sum of 1st and 3rd digits of the 1st number is multiplied by the 1st number to get the 2nd number. 123: 492 → 123 x (1 + 3) = 123 x 4 = 492 312: 1560 → 312 x (3 + 2) = 312 x 5 = 1560 411: 2055 → 411 x (4 + 1) = 411 x 5] = 2055 All combination of number follows this pattern except for: 234: 1208 → 234 x (2 + 4) = 234 x 6] = 1404.
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