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What is the greatest common factor of 18 and 12?

1 answer

To find the greatest common factor (GCF) of 18 and 12, we can follow these steps:

  1. List the factors of each number:

    • Factors of 18: 1, 2, 3, 6, 9, 18
    • Factors of 12: 1, 2, 3, 4, 6, 12

  2. Identify the common factors: The common factors of 18 and 12 are 1, 2, 3, and 6.

  3. Determine the greatest of the common factors: The greatest common factor is 6.

Thus, the GCF of 18 and 12 is 6.