What is the GCF of 45 and 20?

Question:

What is the GCF of 45 and 20?

The Greatest Common Factor of Two Numbers:

In mathematics, the acronym GCF stands for ''greatest common factor''. The greatest common factor of two numbers, x and y is denoted as GCF(x, y), and it is equal to the largest number that is a factor of both x and y. We can use this definition to find the greatest common factor of two numbers.

Answer and Explanation:

The greatest common factor of 45 and 20 is 5.

By definition, GCF(45, 20) is equal to the largest number that is a factor of both 45 and 20, so it is...

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How to Find the Greatest Common Factor

from Math 102: College Mathematics

Chapter 1 / Lesson 3
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