Question : Directions: In the following question, find the odd number from the given alternatives.
Option 1: 25
Option 2: 49
Option 3: 81
Option 4: 121
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Correct Answer: 81
Solution : Let's check the option – First option: 25; 25 = 52→5 is a prime number. Second option: 49; 49 = 72→7 is a prime number. Third option: 81; 81 = 92→9 is not a prime number. Fourth option:121; 121 = 112→11 is a prime number.
So, the third option is different from the other options as 9 is not a prime number. Hence, the third option is correct.
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Option 1: 1331
Option 2: 121
Option 3: 11
Option 4: 133
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Option 2: 270
Option 3: 132
Option 4: 240
Option 1: 125
Option 2: 512
Option 3: 1331
Option 4: 1728
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Option 2: 168
Option 3: 224
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Option 2: 9494
Option 3: 9646
Option 4: 15578
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