1 and 5.
The factors of 15 are 1, 3, 5, and 15. The factors of 20 are 1, 2, 4, 5, 10, and 20. The common factors are 1 and 5.
The common factors are: 1, 5
There are no common factors between these values since 11 is prime and 20 is composite. Then, there are no common prime factors between these values.
The common factors are: 1, 5.
The common factor of 15, 16, and 20 is just 1
The factors of 10 are: 1, 2, 5, 10.The factors of 15 are: 1, 3, 5, 15.The factors of 20 are: 1, 2, 4, 5, 10, 20.The common factors are: 1, 5.
The common factors are: 1, 5.
15: 1,3,5,15 20: 1,2,4,5,10,20
To find the greatest common factor (GCF) of 15 and 20 using the listing method, we first list the factors of each number. The factors of 15 are 1, 3, 5, and 15. The factors of 20 are 1, 2, 4, 5, 10, and 20. The common factor between both numbers is 5, so the GCF of 15 and 20 is 5.
The only common factor of 15, 18, 20, and 50 is 1.
5
The common factors of 20 and 50 are: 1, 2, 5, 10.