What is the greatest common factor of 36 42 and 168?

Answer 1

2 x 3 x 3 x 5 = 90
2 x 2 x 3 x 11 = 132
2 x 2 x 2 x 3 x 7 = 168
Select the common factors.
2 x 3 = 6, the GCF

Answer 2

The prime factorization of 36 is 2 x 2 x 3 x 3. For it to be common, it needs to be compared to the prime factorization of another number.

Answer 3

2 x 2 x 3 x 3 = 36

2 x 2 x 2 x 3 x 7 = 168

Answer 4

2 x 2 x 3 x 3 = 36
2 x 2 x 2 x 3 x 7 = 168
2 x 2 x 3 = 12, the GCF

Answer 5

The GCF of 36, 42 and 168 is 6.