Solutions by everydaycalculation.com

The GCF of 33 and 20 is 1.

- Find the prime factorization of 33

33 = 3 × 11 - Find the prime factorization of 20

20 = 2 × 2 × 5 - To find the GCF, multiply all the prime factors common to both numbers:

Therefore, GCF = 1

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Find hcf of: 66 & 40 99 & 60 165 & 100 231 & 140 66 & 20 33 & 40 99 & 20 33 & 60 165 & 20 33 & 100 231 & 20 33 & 140

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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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