Find the greatest common factor of 8, 18 and 70

In order to find the GCF of no.'s we need to first look at the smallest no (which is 8, in this case)

Next, list down all the factors of 8.

1*8

2*4

4*2

8*1

Now, once you have listed all the factors for 8, find which factor of 8 goes with 18 and 70.

2 is the answer; because 2 goes into 8, 18 and 70.

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im not sure