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.
Option 1: 8 – 512
Option 2: 2 – 8
Option 3: 3 – 9
Option 4: 9 – 729
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Correct Answer: 3 – 9
Solution :
Let's check the options –
First option:
8 – 512; 8
3
= 512
Second option:
2 – 8; 2
3
= 8
Third option:
3 – 9; 3
3
= 27
≠ 9
Fourth option:
9 – 729; 9
3
= 729
So, only in the third option, the cube of the first number is not equal to the second number. Hence, the third option is correct.
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