What is the greatest common factor (GCF) of the numbers 42, 126, and 210?
The greatest common factor (GCF), also known as the greatest common divisor (GCD), of a set of numbers is the largest number that divides all the numbers in the set without leaving a remainder. To find the GCF of 42, 126, and 210, we can use two methods: prime factorization and the listing of factors. … Read more