Question : Directions: In the following question, find the odd number pair from the given alternatives.
Option 1: 11
Option 2: 17
Option 3: 19
Option 4: 21
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Correct Answer: 21
Solution : Let's check the options – First option: 11→ The factors of 11 are 1 and 13. So, 11 is a prime number. Second option: 17→ The factors of 17 are 1 and 17. So, 17 is a prime number. Third option: 19→ The factors of 19 are 1 and 19. So, 19 is a prime number. Fourth option: 21→ The factors of 21 are 1, 3, 7 and 21. So, 21 is not a prime number.
Hence, the f ourth option is correct.
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Question : Directions: In the following question, find the odd number from the given alternatives.
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