answersLogoWhite

0


Best Answer

The common factors of 12 and 21 are 1 and 3.

One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them.

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

The factors of 21 are 1, 3, 7, and 21.

The common factors are 1 and 3.

This means that the greatest common factor is 3.

The numbers are 1 and 3

User Avatar

Wiki User

7y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What are the common factors of 12 and 21?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

What are the common factors of 12 and 14?

The common factors of 12 and 14 are 1 and 21 and 2


What are the common factors of 12 and 21 and 42?

The common factors are: 1, 3


What is the least common factor of 12 and 21?

The factors of 12 are 1, 2, 3, 4, 6, and 12. The factors of 21 are 1, 3, 7, and 21. The common factors are 1 and 3. Therefore, the least common factor (the smallest common factor) is 1.


What is one number that is a factor of 12 and 21?

The common factors of 12 and 21 are 1 and 3.


What are the factors and greatest common factor of 12 and 21?

The factors of 12 are:1, 2, 3, 4, 6, 12The factors of 21 are:1, 3, 7, 21The Greatest Common Factor:GCF = 3


What are the common factors of 6 21 and 30?

The common factors of 6, 12, and 30 are 1 and 3


What are the common factors of 6 12 and 21?

1 and 3


What common factors do 6 12 21 share?

1 and 3


What are the common factors for 12 and 9?

3, 4, and 7 are the common factors of 9 12 and 21.


What are the common factors of 21 and 51?

The common factors of 21 and 51 are: 1 and 3


What is the common factors for 91221?

You need at least two numbers to find something in common. If that's 9, 12 and 21, the common factors are 1 and 3.


What are the common factors of 21 42 and 84?

The common factors of 21 42 and 84 are 21