Example: 30 and 42
Factor them.
2 x 3 x 5 = 30
2 x 3 x 7 = 42
Select the common factors.
2 x 3 = 6, the GCF
Highest common factor is 7.
The highest common factor is: 20
The greatest common factor of 77 and 203 is 7To find the Highest Common Factor convert each number into its prime factors.77 = 7 x 11203 = 7 x 29In this example, 7 is the only factor common to both numbers and is therefore the Highest Common Factor of 77 and 203The GCF is 7.
The highest common factor of 32 and 40 is 8.
The highest common factor of 120 and 150 is 130
The highest common is 2
Highest common factor is 7.
The Highest Common Factor is: 4
The Highest Common Factor is: 9
The highest common factor is: 20
The highest common factor is 7.
The highest common factor is 35.
The highest common factor is 7.
The greatest common factor of 77 and 203 is 7To find the Highest Common Factor convert each number into its prime factors.77 = 7 x 11203 = 7 x 29In this example, 7 is the only factor common to both numbers and is therefore the Highest Common Factor of 77 and 203The GCF is 7.
What is the highest common factor of 33, 3 and 99
The highest common factor (HCF) is 12.
The highest common factor is 3.