What is the greatest common factor of 9 and 24?
The greatest number by which both 24 and 9 are divisible is 3. Therefore, greatest common factor is 3.Alternate method:P.F. of 9 = 3x3P.F. of 24 = 2x2x2x33 is the only prime number which is the factor of both 24 and 9.Therefore, GCF = 3.