Question : Directions: In the following question, select the one different from the other three alternatives.
Option 1: 1
Option 2: 11
Option 3: 21
Option 4: 51
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Correct Answer: 11
Solution : Let's check the options – First option: 1; 1 is not a prime number. Second option: 11; 11 is a prime number. Third option: 21; 21 is not a prime number. Fourth option: 51; 51 is not a prime number.
So, only the second option differs from the other three options as 11 is the only prime number from the given options. Hence, the second option is correct.
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Question : Directions: In the following question, select the one which is different from the other three alternatives.
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