Solutions by everydaycalculation.com

The gcf of 105 and 120 is 15.

- Find the prime factorization of 105

105 = 3 × 5 × 7 - Find the prime factorization of 120

120 = 2 × 2 × 2 × 3 × 5 - To find the gcf, multiply all the prime factors common to both numbers:

Therefore, GCF = 3 × 5 - GCF =
**15**

The greatest common factor (gcf) is also known as greatest common divisor (gcd) or highest common factor (hcf).

Find hcf of: 210 & 240 315 & 360 35 & 40 525 & 600 21 & 24 735 & 840 210 & 120 105 & 240 315 & 120 105 & 360 525 & 120 105 & 600 735 & 120 105 & 840

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