Solutions by everydaycalculation.com

The GCF of 25 and 18 is 1.

- Find the prime factorization of 25

25 = 5 × 5 - Find the prime factorization of 18

18 = 2 × 3 × 3 - To find the GCF, multiply all the prime factors common to both numbers:

Therefore, GCF = 1

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Find hcf of: 50 & 36 75 & 54 125 & 90 175 & 126 50 & 18 25 & 36 75 & 18 25 & 54 125 & 18 25 & 90 175 & 18 25 & 126

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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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