Question : Directions: Four number-pairs have been given, out of which three are alike in some manner and one is different. Select a different one.
(NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g. 13 – operations on 13 such as adding/subtracting/multiplying etc to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)
Option 1: 7 : 334
Option 2: 5 : 134
Option 3: 9 : 720
Option 4: 11 : 1322
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Correct Answer: 5 : 134
Solution :
Let's check each option –
First option:
7 : 334; 7
3
– 9 = 343 – 9 = 334
Second option:
5 : 134; 5
3
– 9 = 125 – 9 = 116 ≠ 134
Third option:
9 : 720; 9
3
– 9 = 729 – 9 = 720
Fourth option:
11 : 1322; 11
3
– 9 = 1331 – 9 = 1322
So, only the second option doesn't follow the same pattern as followed by the given set of numbers. Hence, the second option is correct.
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