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Answer: 4
Definition: A factor is a divisor - a number that will evenly divide into another number. The greatest common factor of two or more numbers is the largest factor that both numbers have in common.
Method:
One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them.
The factors of 20 are 1, 2, 4, 5, 10, and 20.
The factors of 72 are 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, and 72.
The common factors are 1, 2, and 4. Therefore, the greatest common factor is 4.
The GCF is 4.
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What is the greatest common factor of 88 and 72?
The greatest common factor of 88 and 72 is 8.
What is the greatest common factor of 72 and 144?
The GCF of 72 and 144 is 72. Since 72 is a factor of 144, it is automatically the GCF.
What is the greatest common factor of 24 36 72?
The Greatest Common Factor of 24, 36, 72 is 12.
What is the greatest common factor of 16 72 and 81?
The greatest common factor of 16 72 and 81 is 1.
What is the greatest common factor 20 36 72?
The GCF is 4.
