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
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7The highest common factor is 7
The highest common factor for 18 and 16 is 2.
HCF stands for the Highest Common Factor. To determine this, you find the highest number possible that can be divide each of the two numbers in a fraction.
HCF stands for Highest Common Factor. It is also known as the GCF, or Greatest Common Factor.
The highest or greatest common factor of 420 and 294 is 42.