Determine the gcf of two numbers the second number is a multiple of the first number what would the gcf be?

If the second number is a multiple of the first number, then the greatest common factor (GCF) would be the first number itself. This is because the GCF is the largest number that divides both numbers evenly, and since the second number is a multiple of the first number, the first number would be the largest common factor. So, the GCF in this case would be the first number.