The GCF of 40, 45, and 90 is 5
The factors of 40 are 1, 2, 4, 5, 8, 10, 20, and 40
The factors of 45 are 1, 3, 5, 9, 15, and 45
The factors of 90 are 1, 2, 3, 5, 6, 10, 15, 18, 30, 45, and 90
So the greatest common factor is 5.
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The greatest common factor of 60, 80, and 100 is 20
The GCF is 20.
The GCF is 20.
gcf(60, 100) = 20.
The greatest common factor (GCF) is often also called the greatest common divisor (GCD) or highest common factor (HCF). Keep in mind that these different terms all refer to the same thing: the largest integer which evenly divides two or more numbers.The greatest common factor of 20, 40, and 100 is 20.