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 highest common factor (also called greatest common factor) of 10 and 35 is 5.
The highest common factor of 32 and 40 is 8.
1 is their highest common factor.
The highest common is 2
Highest common factor is 7.
The Highest Common Factor is: 9
The Highest Common Factor is: 4
The highest common factor is 7.
The highest common factor is 7.
The highest common factor is 35.
The highest common factor is: 20
99 and 165's highest common factor is 33.
There is no highest common factor for a single number. Common means same or like, where in this case you cannot have an item same to nothing. You need to compare between two numbers. For example, the highest common factor of 19 and 323 (17x19) is 19.
7The highest common factor is 7
The highest common factor (HCF) is 12.