Factors of 15: List the factors of 15.1×15=153×5=15Factors of 15: 1, 3, 5, 15
Factors of 42: List the factors of 42.1×42=422×21=423×14=426×7=42Factors of 42: 1, 2, 3, 6, 7, 14, 2×21=420, 2×21=421
Common factors of 15 and 42: Identify the common factors of 15 and 42.Factors of 15: 1, 3, 5, 15Factors of 42: 1, 2, 3, 421, 422, 423, 424, 42Common factors of 15 and 42: 1, 3
Greatest Common Factor (GCF) of 15 and 42: Find the Greatest Common Factor (GCF) of 15 and 42.The common factors are 1 and 3.3 is greater than 1.GCF of 15 and 42: 3