What is the GCF of 30 and 45?

1 Answer
Sep 6, 2016



'Splitting' the numbers down into their prime factors giving:

#30-> 2xxcolor(red)(3)color(white)(xx 3)xxcolor(blue)(5)#

The common values are: #3xx5=15#

So the GCF = 15

You will find a list of prime numbers on any search engine. I would suggest that 'images' may be a better search option.