The greatest common multiple of 27 and 6 are?

Answer 1

There is no greatest common multiple: for whatever value you say is the greatest I can always add their lowest common multiple and get an even greater common multiple.

There is a greatest common FACTOR or a LOWEST common multiple:

gcf(27, 6) = 3

lcm(27, 6) = 54

Using the factorisation method:

27 = 3³

6 = 2 x 3

hcf = 3

lcm = 2 x 3³ = 54