Solutions by everydaycalculation.com

The GCF of 3 and 28 is 1.

- Find the prime factorization of 3

3 = 3 - Find the prime factorization of 28

28 = 2 × 2 × 7 - To find the GCF, multiply all the prime factors common to both numbers:

Therefore, GCF = 1

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Find hcf of: 6 & 56 9 & 84 15 & 140 21 & 196 6 & 28 3 & 56 9 & 28 3 & 84 15 & 28 3 & 140 21 & 28 3 & 196

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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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