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The Greatest Common Factor (GCF) is the largest factor common to two or more numbers. For example, 17 is the GCF of 34, 51, and 102 because it is the largest number that is a factor common to all three numbers.
The GCF, or Greatest Common Factor, is the largest positive integer that can be evenly divided into all the numbers of a given set.
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What are the negative GCF of 980?
A couple of problems. You need at least two numbers to find a GCF and the GCF is by definition positive.
What number is a common factor of 15 18 and 30?
By its very definition, a single number cannot have a greatest common factor. The word "common" is there to indicate common to more than one integer. Of the 11 pairs, triplets and quads that can be drawn from the four numbers, 6 have GCF = 3, 4 have GCF = 6, and 1 has GCF = 15.
Why is the gcf of any even number always even?
By definition, every even number has 2 as a factor. That means that every set of even numbers will have at least 2 as a common factor. The GCF might be higher, but if it has 2 as a factor, it's even.
What is the GCF of the numbers 21 18 and 24?
The GCF is 6.
What is the GCF of 81 and 180?
The GCF is 9.
