Question 107994
Let's divide and divide...


{{{16/68=(16/2)/(68/2)=8/34}}}
{{{8/34=(8/2)/(34/2)=4/17}}}


17 is prime
4 is composite
17 > 4

...cannot be divided further...


We divide by 2 and then 2 again. So, the GCF is...

{{{2*2=4}}}


Thus, the GCF of 16 and 68 is 4.


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