Q. What is the greatest common factor of 3 and 18?____
List Factors of 3: List the factors of 3. Factors of 3: 1, 3
List Factors of 18: List the factors of 18.Factors of 18: 1, 2, 3, 6, 9, 18
Identify Common Factors: Identify the common factors of 3 and 18. Common factors: 1, 3
Determine Greatest Common Factor: Determine the greatest common factor.The greatest common factor is 3, since it's the largest number common to both lists.