Solutions by everydaycalculation.com

The GCF of 4 and 63 is 1.

- Find the prime factorization of 4

4 = 2 × 2 - Find the prime factorization of 63

63 = 3 × 3 × 7 - To find the GCF, multiply all the prime factors common to both numbers:

Therefore, GCF = 1

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Find hcf of: 8 & 126 12 & 189 20 & 315 28 & 441 8 & 63 4 & 126 12 & 63 4 & 189 20 & 63 4 & 315 28 & 63 4 & 441

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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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