In the first part of the question, I showed that every group of order less than 6 is Abelian.
In the second part of the question I am asked to show that there are exactly 2 non-isomorphic groups of order 6.
First, what does that mean? Do I have to find two specific groups that are non-isomorphic to each other? Does it make sense to say that a group is non-isomorphic without saying what is it non-isomorphic to? And what does it have to do with the first part of the question?