The first step to this method of finding the Greatest Common Factor of 20 and 24 is to find and list all the factors of each number. Again, you can see how this is done by looking at the “Factors of” articles that are linked to above.
See Also
Factors of 24 (How to Find Factors and Prime Factorisation of 24)GCF of 2 and 20 | How to Find GCF of 2, 20?GCF of 12 and 20 | How to Find GCF of 12, 20?LCM of 20 and 24 - How to Find LCM of 20, 24?Let’s take a look at the factors for each of these numbers, 20 and 24:
Factors of 20: 1, 2, 4, 5, 10, 20
Factors of 24: 1, 2, 3, 4, 6, 8, 12, 24
When you compare the two lists of factors, you can see that the common factor(s) are 1, 2, 4. Since 4 is the largest of these common factors, the GCF of 20 and 24 would be 4.
