Solutions by everydaycalculation.com

The GCF of 7 and 55 is 1.

- Find the prime factorization of 7

7 = 7 - Find the prime factorization of 55

55 = 5 × 11 - To find the GCF, multiply all the prime factors common to both numbers:

Therefore, GCF = 1

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Find hcf of: 14 & 110 21 & 165 35 & 275 49 & 385 14 & 55 7 & 110 21 & 55 7 & 165 35 & 55 7 & 275 49 & 55 7 & 385

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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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