Question

What is the GCF 16 24 40

Answer 1

The factors of 16 are 1, 2, 4, 8, and 16. 
The factors of 24 are 1, 2, 3, 4, 6, 8, 12, and 24. 
The factors of 40 are 1, 2, 4, 5, 8, 10, 20, and 40. 
So the greatest common factor of 16, 24, and 40 is 8.
                             
                                         Hope this helps:)