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Which of the following is NOT prime number? A 1057 B 3163 C 157 D263

User Greenish
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2 Answers

4 votes
1057 we can divide by 7 
User Mingle Li
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A prime number is a number that is only divisible by 1 and itself, no other number can divide a prime number completely, there will always be some numbers remaining. In the question given above, the correct option is A. This is because 7 will completely divide 7 to give 151.
User Brigadeiro
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