One way to find the GCF of 94 and 28 is to compare the prime factorization of each number. To find the prime factorization, you can follow the instructions for each number here:
Here is the prime factorization of 94:
And this is the prime factorization of 28:
When you compare the prime factorization of these two numbers, you can see that there are matching prime factors. You can now find the Greatest Common Factor of 94 and 28 by multiplying all the matching prime factors to get a GCF of 94 and 28 as 4:
Thus, the GCF of 94 and 28 is: 4