Can the GCF of a pair of numbers be equal to one of the numbers?

Yes, the Greatest Common Factor (GCF) of a pair of numbers can be equal to one of the numbers. This happens when one of the numbers is a multiple of the other number. In such cases, the GCF will be the smaller number itself, as it is the largest number that can evenly divide both numbers. For example, the GCF of 12 and 6 is 6, as 6 is a factor of both numbers.