I was given this question, and I'm a little confused. A little bit of help would be great.
Find a condition on $m$ that is sufficient but not necessary for $\frac{m}{2} \in \mathbb{Z}$.
I get that if a condition $x$ is sufficient for $y$, the presence of $x$ guarantees the presence of $y$. Applying that to this question, am I looking for something like a condition $x$ that guarantees the validity of $\frac{m}{2} \in \mathbb{Z}$, but $\frac{m}{2} \in \mathbb{Z}$ is possible without the presence of $x$?