I have a midterm tomorrow morning and I am completely lost on how to finish the problem, I was told a question tomorrow will mirror this one so any help is appreciated. Question: Prove any group of order 9 is abelian. Answer: Let G be a group such that |G|=9 One of these elements has to be the identity. The remaining 8 will consist of 4 elements and their respective inverses. Where do I go from here?