The GCF of 18 and 72 is?

The Greast Common Factor of 18 and 72 is 18

Step-by-step explanation:

Factors of 18: 1, 2, 3, 6, 9, 18

Factors of 72: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72

GCF of 18 and 72 is 18

Step-by-step explanation:

To find the GCF of two or more numbers

we need two steps

Step 1: List the prime factors of each number.

Step 2: Multiply those factors all numbers have in common. If there are no common prime factors, the GCF is 1.

To find the GCF of 18 and 72

18 = 2 * 3 * 3

72 = 2 * 2 * 2 * 3 * 3

Common prime factors 2, 3, 3

Therefore GCF = 2 * 3 * 3 = 18