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Which of the following is not a prime number :
1. 499
2. 769
3. 899
4. 619

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Correct Answer - Option 3 : 899

Formula/Concept used

Prime number is the number having just two factors i.e one and itself.

Calculation 

⇒ From the above numbers just 899 has more than two factors i.e 1, 29, 31, 899.

∴  899 is not a prime number.

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