If we take the group $G={a,a^2,a^3,a^4,a^5,a^6=e}$, then number of generators will be $2$ as $1$ and $5$ are the positive integers less than and coprime to $6$. What are the generators?
It may be a very easy question. However, I don't know what the generators are. There's nothing in my book about it.