Question : Directions: In the following question, find the odd number from the given alternatives.
Option 1: 8
Option 2: 64
Option 3: 125
Option 4: 343
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Correct Answer: 64
Solution : Let's check the options – First option: 8; 8 = 2 3 (2 is a prime number.) Second option: 64; 64 = 4 3 (4 is not a prime number.) Third option: 125; 125 = 5 3 (5 is a prime number.) Fourth option: 343; 343 = 7 3 (7 is a prime number.)
So, only the number in the second option is not the cube of a prime number. Hence, the second option is correct.
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