What is the greatest common factor of 21 and 80?

Answer 1

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 21 and 85 is 1.

Answer 2

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 73 and 85 is 1

Answer 3

The greatest common factor of 21 and 81 is 3.

Answer 4

The greatest common factor of 21 and 80 is 1.

Answer 5

The GCF of 21 and 65 is 1.

The factors of 21 are 1, 3, 7 and 21.

The factors of 65 are 1, 5, 13 and 65.

They only have 1 in common, so it is the GCF.

Answer 6

The word "GREATEST" is a superlative adjective and that means there can be only one.GCF(21, 80) = 1.

Answer 7

The GCF of 21, 35, and 84 is 7.

Answer 8

The GCF of 15 and 85 is... 5

Answer 9

The GCF is 1.

Answer 10

gcf of 21 and 80 is 1.