Solutions by everydaycalculation.com

The GCF of 28 and 6 is 2.

- Find the prime factorization of 28

28 = 2 × 2 × 7 - Find the prime factorization of 6

6 = 2 × 3 - To find the GCF, multiply all the prime factors common to both numbers:

Therefore, GCF = 2

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Find hcf of: 56 & 12 14 & 3 84 & 18 140 & 30 196 & 42 56 & 6 28 & 12 84 & 6 28 & 18 140 & 6 28 & 30 196 & 6 28 & 42

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The greatest common factor (GCF) is also known as greatest common divisor (GCD) or highest common factor (HCF).

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