The greatest common factor, or GCF, is the greatest factor that divides two numbers.
The first step to find the GCF of 74 and 24 is to list the factors of each number. The factors of 74 are 1, 2, 37 and 74. The factors of 24 are 1, 2, 3, 4, 6, 8, 12 and 24. So, the Greatest Common Factor for these numbers is 2 because it divides all them without a remainder.
as the only number which is common in both is 2 ... it is the greatest common factor of 74 and 24 . if there's more than 2 common no.s the greatest of all the common no.s is the GCF