What is the greatest common factor of 94 and 248?

Answer 1

The same as the greatest common factor of 94 and 154 (I calculated 154 as 248 minus 94).

Which, in turn, is the GCF of 94 and 60 (154 - 94 = 60)

Which, in turn, is the GCF of 60 and 34 (94 - 60 = 34)

and so on, until you hit 2, which is the answer.