Question

What is the GCF for 18, 45, and 90

Answer 1

The GCF is nine(9) just look at the 2x table and you'll see that it gives you all the factors

Answer 2

♥ GCF (greatest common factor) is 9.
Multiply all of these by 2, and the greatest number that you get (that are the same) of all, is the GCF
So the GCF of like
10 20 and 30
Is 10 because thats the largest number you can multiply to get all the same.