Solutions by everydaycalculation.com

The GCF of 9 and 25 is 1.

- Find the prime factorization of 9

9 = 3 × 3 - Find the prime factorization of 25

25 = 5 × 5 - To find the GCF, multiply all the prime factors common to both numbers:

Therefore, GCF = 1

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Find hcf of: 18 & 50 27 & 75 45 & 125 63 & 175 18 & 25 9 & 50 27 & 25 9 & 75 45 & 25 9 & 125 63 & 25 9 & 175

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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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