What is the GCF of 189 42 and 441?

Answer 1

The factors of 42 are:

1, 2, 3, 6, 7, 14, 21, 42

The factors of 189 are:

1, 3, 7, 9, 21, 27, 63, 189

The factors of 441 are:

1, 3, 7, 9, 21, 49, 63, 147, 441

The common factors are:

1, 3, 7, 21

The Greatest Common Factor:

GCF = 21

Answer 2

You need at least two numbers to find a GCF.

Answer 3

A single number cannot have a greatest common factor because "common" refers to factors that two or more numbers have in common. You have only one, which is 189.

Answer 4

The GCF is 63.

Answer 5

The GCF of 81 and 189 is 27.

Answer 6

GCF of 189 42 and 441 is 1.

Answer 7

It is: 63

Answer 8

1

Answer 9

63