What is the greatest common factor of 20 40 and 60?

Answer 1

Answer: 20

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 the 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 40 are 1, 2, 4, 5, 8, 10, 20, and 40.

The factors of 60 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60.

The common factors are 1, 2, 4, 5, 10, and 20. Therefore, the greatest common factor is 20.

Answer 2

Oh, dude, the greatest common factor of 20, 40, and 60 is 20. It's like the cool kid that all three numbers can hang out with without any drama. So yeah, 20 is the number they all have in common, making it the greatest common factor.

Answer 3

Ah, what a lovely question! To find the greatest common factor of 20, 40, and 60, we first look at the factors of each number. The factors of 20 are 1, 2, 4, 5, 10, and 20. The factors of 40 are 1, 2, 4, 5, 8, 10, 20, and 40. Lastly, the factors of 60 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60. The greatest common factor among these numbers is 20, my friend.