Four number-pairs have been given, out of which three are alike in some manner and one is different. Select the one that is different.
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Correct answer: (B) 45-235
Explanation
In the others the second number is 5 times the first (55×5 = 275, 35×5 = 175, 25×5 = 125). 45×5 = 225, not 235.