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Because they do not divide evenly into 12 with no remainder.

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11y ago
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13y ago

The factors of 12 are 1, 2, 3, 4, 6, and 12. They are factors because they divide evenly into 12. e.g. 12 / 3 = 4.

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8y ago

No number can have a factor greater than itself. In order for a number to be a factor, it has to partner with another integer to create the target number.

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Q: How do you know that 5 7 8 9 10 11 are not factors of 12?
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Related questions

What are the factors for 11 and 12?

11's factors are 1 and 11. 12's factors are 1,2,3,4,6,1 and 12.


What are all the factors of 10 11 12 13 15 16 17 18 19 20?

The factors of 10 are: 1, 2, 5, 10 The factors of 11 are: 1, 11 The factors of 12 are: 1, 2, 3, 4, 6, 12 The factors of 13 are: 1, 13 The factors of 15 are: 1, 3, 5, 15 The factors of 16 are: 1, 2, 4, 8, 16 The factors of 17 are: 1, 17 The factors of 18 are: 1, 2, 3, 6, 9, 18 The factors of 19 are: 1, 19 The factors of 20 are: 1, 2, 4, 5, 10, 20


If The sum of two factors of 11 is 12 what are the factors?

The factors are 1 & 11 !


What are the factors for theses numbers 10 11 12 13?

1,2,5,10 1,11 1,2,3,4,6,12 1,13


Factors of 10 and 12?

The factors of 10 are 1, 2, 5, and 10. The factors of 12 are 1, 2, 3, 4, 6, and 12.


What are the common factors of 10 and 12?

The factors of 10 are 1, 2, 5, and 10. The factors of 12 are 1, 2, 3, 4, 6, and 12. The common factors of 10 and 12 are 1 and 2, and the GCF is 2.


What are the factors of 9 10 and 12?

The factors of 9 are: 1, 3, 9 The factors of 10 are: 1, 2, 5, 10 The factors of 12 are: 1, 2, 3, 4, 6, 12


What is 10 divided by 11 divided by 12?

10 ÷ 11 ÷ 12 = (10 ÷ 11) ÷ 12 = 5/66 = 0.07575... ≈ 0.076


What are four consecutive numbers that add up to -42?

The numbers are -12, -11, -10 and -9.


What is the sum of the factors of 11?

12.


What are the common factors for 12 and 10?

The factors of 10 are: 1, 2, 5, 10.The factors of 12 are: 1, 2, 3, 4, 6, 12.The common factors are: 1, 2


Do you need to know all the factors of a number in order to determine if its a prime or composite number and why?

1 2 3 4 5 6 7 8 9 10 11 12