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The GCF of 12 and 28 is 4.
One way to determine the greatest common factor is to find all the factors of the numbers and compare them.
The factors of 12 are 1, 2, 3, 4, 6, and 12.
The factors of 28 are 1, 2, 4, 7, 14, and 28.
The common factors are 1, 2, and 4. Therefore, the greatest common factor is 4.
The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together.
The prime factors of 12 are 2, 2, and 3.
The prime factors of 28 are 2, 2, and 7.
The prime factors in common are 2 and 2, so the greatest common factor is 2 x 2 = 4.
Factors of 12: 1 2 3 4 6 12
Factors of 28: 1 2 4 7 14 28
It is 4
4
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What is the greatest common factor of 12 and 20 and 28?
The factors of 12 are:1, 2, 3, 4, 6, 12The factors of 28 are:1, 2, 4, 7, 14, 28The common factors are:1, 2, 4The Greatest Common Factor:GCF = 4
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