What is the greatest common factor of 48 and 120?

The greatest common factor (GCF) is also called greatest common divisor, or highest common factor. For 2 or more numbers, the largest positive number that divides the given numbers without remainder is the GCF.
For 120 and 48, number 24 is the GCF. That is, \(\frac{\mathrm{120} }{\mathrm{24}}=5\) and \(\frac{\mathrm{48} }{\mathrm{24}}=2\)
No number higher than 24 can divide both numbers and come up with a positive whole number.