Upgrade to access all content for this subject

If $x$, $y$, and $z$ are a set of positive, consecutive integers where $x< y< z$, which of the following must be TRUE?

I. $x\times y$ is an even numberII. $y\times z$ is an even numberIII. $x\times y\times z$ is an even number.

I only

II only

III only

I and II

I, II, and III