What is the greatest common factor of 12 and 18?

1 Answer
sente
Apr 5, 2016

#6#

Explanation:

#12 = 2*2*3#

#18 = 2*3*3#

If we go through the list of primes in each prime factorization, both #12# and #18# have at least one #2# and at least one #3#, and those are the greatest numbers of #2#s and #3#s we can find in both. Thus the greatest common factor of #12# and #18# is #2xx3 = 6#

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