What is the Greatest Common Factor of 42 and 100?

To find the Greatest Common Factor (GCF) of 42 and 100, you need to determine the largest number that can evenly divide both 42 and 100. First, list the factors of each number: 42 (1, 2, 3, 6, 7, 14, 21, 42) and 100 (1, 2, 4, 5, 10, 20, 25, 50, 100). The GCF is the largest number that appears in both lists, which in this case is 2. Therefore, the GCF of 42 and 100 is 2.