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Q: Are 12 and 18 pirme numbers?

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Zero and one.

Based on the sample you have provided, I see that 4 numbers, counting by 2 from 12 to 18, form a repeating sequence. I would expect that the next 4 numbers in this series would again be 12, 14 16, and 18.

30 + 18 = 48 30 - 18 = 12 The two numbers are therefore 30 and 18.

6 and 18

18 and 6.

It's 12 and 6 because 12 + 6 =18 and 12 - 6 = 6.

no

The numbers are 18 and 12

The numbers are 18 and 12

6 and 126 and 1812 and 18

6 and 126 and 1812 and 18

4 is not a factor of 18 and is a factor of both 8 and 12

5 and 37 are prime. 12 and 18 are composite.

The greatest common factor of the numbers 12, 16 and 18 is 2.

What answer in 2and3

30

-12 is larger than -18. Think of the negative numbers as moving right and left along a number line containing whole numbers.

The answer is 18. The factors of 12 are 1,2,3,4,6 and 12. The factors of 18 1, 2, 3, 6, 9, and 18. The first 3 multiples of 12 are 12, 24, 36... and the first 3 multiples of 18 are 18, 36, 54....

12 and 18

18 and 12

12 6

That one is easy it is 18 and 12

18

The composite numbers between 11 and 19 are 12, 14, 15, 16 and 18

Divide both numbers by 6. 12/18 = 2/3