Here we will first tell you what the Greatest Common Factor of 40 and 49 is and then show you how
we found the Greatest Common Factor of 40 and 49.
The Greatest Common Factor of 40 and 49 is:
1
Stepbystep instructions for how to find the Greatest Common Factor of 40 and 49:
Step 1) We made a list of all the factors of 40 which are 1, 2, 4, 5, 8, 10, 20, 40.
Step 2) Then, we made a list of all the factors of 49 which are 1, 7, 49.
Step 3) Finally, we compared the lists in Step 1 and Step 2 to find that the largest number they
have in common is 1. That means that the Greatest Common Factor of 40 and 49 is 1.

