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Prime Numbers

A prime number is a number that does not appear in the time's table. Therefore, it does not divide by anything else apart from itself and 1. That is a good way of thinking of them. The first 12 prime numbers are:

1. 2

2. 3

3. 5

4. 7

5. 11

6. 13

7. 17

8. 19

9. 23

10. 29

11. 31<

12. 37

To find a prime number divide it by 3 or 7 and if it comes out as a whole number then it is not a prime number Example

51 divided by 3 equals 17 so therefore 51 is not a prime number

59 divided by 3 equals 19.67 now it has come out not as a whole number, try it with another number, So 59 divided by 7 equals 8.43 so you can see that 59 is not a prime number

(All answers given above are rounded too 2 decimal places)

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