Question : Directions: Four pairs of numbers have been given, out of which three are alike in some manner, while one is different. Choose out the odd one.
Option 1: 25 : 16 : 9
Option 2: 64 : 100 : 18
Option 3: 81 : 9 : 19
Option 4: 16 : 64 : 12
Correct Answer: 81 : 9 : 19
Solution :
Let's check each option –
First option:
25 : 16 : 9→√(25) + √(16) = 5 + 4 = 9
Second option:
64 : 100 : 18→√(64) + √(100) = 8 + 10 = 18
Third option:
81 : 9 : 19→√(81) + √(9) = 9 + 3 = 12 ≠ 19
Fourth option:
16 : 64 : 12→√(16) + √(64) = 4 + 8 = 12
So, only the third option doesn't follow the same pattern as followed by the other three. Hence, the third option is correct.
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