1, 2, 3, 4, 6, 12
1, 3, 7, 21
The factors of 12 are: 1, 2, 3, 4, 6, 12 The factors of 21 are: 1, 3, 7, 21 The factors of 30 are: 1, 2, 3, 5, 6, 10, 15, 30
The factors of 12 are:1, 2, 3, 4, 6, 12The factors of 21 are:1, 3, 7, 21The Greatest Common Factor:GCF = 3
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
The common factors of 12 and 21 are 1 and 3.
The common factors of 12 and 14 are 1 and 21 and 2
The common factors are: 1, 3
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.
The factors of 12 are 1, 2, 3, 4, 6, and 12. The factors of 20 are 1, 2, 4, 5, 10, and 20.
The factors of 21 are: 1, 3, 7, 21 The factors of 84 are: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84
The factors of 21 are 1, 3, 7, and 21. The factors of 48 are 1, 2, 3, 4, 6, 8, 12, 16, 24, and 48.
21
1 and 3