Question
Four number-pairs have been given, out of which three
are alike in some manner and one is different. Select the number-pair that is different.Solution
In all the pairs, second number is prime multiple of first number except for [24: 144]. In 25: 425 → 425 ÷ 25 = 17 In 15: 285 → 285 ÷ 15 = 19 In 21: 231 → 231 ÷ 21 = 11 But in 24: 144 → 144 ÷ 24 = 6
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