1, 2, 3, 6, 7, 14, 21, and 42 are the factors of 42.
You need another set of factors to compare them to to find something in common.
The HCF of 28, 42 & 56... is 14 !
The three greatest factors of 126 are 42, 63 and 126. For them to be common, they need to be compared to another set of factors.
The common factors of 32, 42, and 52 are: 1 and 2.
The common prime factors of 42 and 56 are 2 and 7
The common factors of 42 and 105 are: 1, 3, 7, and 21
Common factors of 48 and 42 are: 1, 2, 3, and 6.
It is: 6
The GCF is 6.
It is 7
The greatest common factor is 21
The HCF of 28, 42 & 56... is 14 !
The factors of 30 are 2, 3, and 5 The factors of 42 are 2, 3, and 7 So, the highest common factor will be 2 x 3 = 6
The Greatest Common Factor (GCF) is: 6
The three greatest factors of 126 are 42, 63 and 126. For them to be common, they need to be compared to another set of factors.
The factors of 18 are: 1, 2, 3, 6, 9, 18.The factors of 42 are: 1, 2, 3, 6, 7, 14, 21, 42.The common factors are: 1, 2, 3, 6.The Greatest Common Factor (GCF) is: 6
The common factors of 21 and 42 are 1,3,7,21
To do this, the first step is to write the numbers as the product of their prime factors. In this case we have: 42 = 2x3x7 63 = 3x3x7 The next step is to identify common factors. In this case both numbers have a 3 and a 7 as factors. Take these numbers and multiply them together to find the HCF: 3x7 = 21 Thus the highest common factor of 42 and 63 is 21.