Question

what is the greatest common factor of 30 and 54

Answer 1

30=3x2x5
54=3x3x3x2

The GCF of 30 and 54 is 6.

Answer 2

The factors of 30 are 1, 2, 3, 5, 6, 10, 15, and 30 .

The factors of 54 are 1, 2, 3, 6, 9, 18, 27, and 54.

The factors that both numbers have in common are 1, 2, 3, and 6 .

The greatest one is 6 .