The factors of 30 are: 1, 2, 3, 5, 6, 10, 15, 30 The factors of 81 are: 1, 3, 9, 27, 81 The common factors are: 1, 3
The common factors of 120 and 150 are 1, 2, 3, 5, 6, 10, 15 and 30
The common factors of 20 and 45 are 1 and 5 Factors of 45: 1 and 45, 3 and 15, and 5 and 9 Factors of 20: 1 and 20, 2 and 10, and 4 and 5 So the common factors are 1 and 5.
The common factors of 15 and 70 are 1 and 5
I am guessing you want common factors. That is to say factors common to 10 and 30 The common factors would be: 1,2, 5, and 10, but there only 4 that are common. 15 and 30 are factors of 30 so if you add those you have 6 factors.
As factors, just 1.
The factors of 30 are: 1, 2, 3, 5, 6, 10, 15, 30 The factors of 81 are: 1, 3, 9, 27, 81 The common factors are: 1, 3
The common factors of 120 and 150 are 1, 2, 3, 5, 6, 10, 15 and 30
The factors of 10 are 1, 2, 5, and 10. The factors of 12 are 1, 2, 3, 4, 6, and 12. The common factors of 10 and 12 are 1 and 2, and the GCF is 2.
The factors of 10 are: 1, 2, 5, 10.The factors of 12 are: 1, 2, 3, 4, 6, 12.The common factors are: 1, 2
The factors of 6 are 1, 2, 3, and 6The factors of 10 are 1, 2, 5, and 10The common factors of 6 and 10 are 1 and 2
The GCF of 10 and 45 is 5 The factors of 10 are 1, 2, 5, and 10. The factors of 45 are 1, 3, 5, 9, 15, and 45. The largest factor they have in common is 5, so 5 is the greatest common factor. Or, you can use prime factors. The prime factors of 10 are 2 and 5. The prime factors of 45 are 3, 3, and 5. The prime factors they have in common are a single 5, so 5 is the greatest common factor.
Factors of 3: 1, 3.Factors of 7: 1, 7.Factors of 10: 1, 2, 5, 10.GCF (3, 7, 10) = 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 factors of 21 are 1, 3, 7, and 21. The factors of 30 are 1, 2, 3, 5, 6, 10, 15, and 30. The common factors are 1 and 3. The greatest common factor is 3.
The factors of 10 are: 1, 2, 5, 10The factors of 15 are: 1, 3, 5, 15The common factors are: 1, 5
The factors of 10 are: 1, 2, 5, 10The factors of 45 are: 1, 3, 5, 9, 15, 45The common factors are: 1, 5