The common factors of 18, 20, and 24 are: 1 and 21 and 2
Just 1.
20, 21, 22
Since the numbers 20 and 21 share no common positive integer factors, 20/21 is expressed in its simplest form.
The common factors of 21 and 51 are: 1 and 3
The common factors of 21 42 and 84 are 21
The factors of 21 are 1,3,7, and 21. The factors of 70 are 1,2,5,7,14,35, and 70 The common factors of 21 and 70 are 1 and 7.
The common factors of 21 and 63 are 1, 3, 7, and 21
Factors of 20: 1 2 4 5 10 20Factors of 21: 1 3 7 21The GCF of 20 and 21 is 1
The common factors of 20 and 40 are 20,10,5,4,2,1.
The factors of 21 are 1, 3, 7 and 21. For them to be common, they need to be compared to another set of factors.
The common factors of 30 and 21 are 1 and 3.