The common factors of 42 and 60 are: 1, 2, 3, and 6
It has all the factors of 42 on one side and the factors of 60 in the other part with factors for both in the middle.
Factors of 42: 1 2 3 6 7 14 21 42 Factors of 60: 1 2 3 4 5 6 10 12 15 20 30 60 The GCF of 42 and 60 is 6
The factors of 42 are 1, 2, 3, 6, 7, 14, 21, and 42The factors of 60 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60The common factors of 42 and 60 are 1, 2, 3 and 66 is the GCF420 is the LCM
The common factors are: 1, 2, 3, 6.
1, 2, 3 and 6
The GCF of 8, 42, and 60 is 2. The factors of 8 are 1, 2, 4, and 8. The factors of 42 are 1, 2, 3, 6, 7, 14, 21, and 42. The factors of 60 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60. The greatest common factor is 2. Or, you can look at the prime factors. The prime factors of 8 are 2, 2, and 2. The prime factors of 42 are 2, 3, and 7. The prime factors of 60 are 2, 3, and 5. The only prime factor they all have in common is 2, so the greatest common factor is 2. Using factor trees: 8 4,2 2,2,2 42 21,2 7,3,2 60 30,2 15,2,2 5,3,2,2 The GCF is 2.
The GCF of 42, 60 and 78 is 6. You are left with 7, 10 and 13 respectively after division. There are no further factors in common (aside from 1).
The greatest common factor is 6
There are four: 1, 2, 3 and 6
The GCF of 42 and 60 is 6 More detail: One way to determine the greatest common factor is to find all the factors of the numbers and compare them. The factors of 42 are 1, 2, 3, 6, 7, 14, 21, and 42. The factors of 60 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60. The common factors are 1, 2, 3, and 6. Therefore, the greatest common factor is 6. The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together. The prime factors of 42 are 2, 3, and 7. The prime factors of 60 are 2, 2, 3, and 5. The common prime factors are 2 and 3, so the greatest common factor is 2 x 3 = 6. The greatest common factor of 60 and 42 is 6
60-42 = 18