What are the greatest factors of 15 and 25?

Answer 1

-- The greatest factor of 21 is 21 .

-- The greatest factor of 12 is 12 .

-- 1, 2, and 3 are factors of both 21 and 12 .

-- The greatest common ('same for both') factor is 3 .

Answer 2

The greatest common factor of 25 and 12 is 1.

Answer 3

The greatest factor of any positive number is the number itself. The greatest common factor of 15 and 25 is 5.

Answer 4

The GCF is 1.

Answer 5

The GCF is 3.

Answer 6

1, 2, 3, 4, 6, 12

1, 3, 9, 27

Answer 7

There is only one and it is 1

Answer 8

3