What is the greatest common factor of 33 66 and 99?

Answer 1

Start with the factors of 99:

99 = 33 X 3 = 11 X 3 X 3.

So {1, 3, 9, 11, 33, 99} are the factors of 99.

Next find the factors for 66:

66 = 11 X 6 = 11 X 3 X 2.

So {1, 2, 3, 6, 11, 22, 33, 66} are the factors of 66.

Next find the common numbers of these two sets:

{1, 3, 11, 33}.

Since 33 is the largest of these numbers, it is the greatest common factor.

Answer 2

At least two numbers are required to give a common factor.

Answer 3

The GCF is 33.

Answer 4

It is 33.