The problem asks us to determine what we know about the solutions to the equation $xyz = 0$. Here, $x$, $y$, and $z$ are three numbers.

1. Problem Description

The problem asks us to determine what we know about the solutions to the equation $xyz = 0$. Here, $x$, $y$, and $z$ are three numbers.

2. Solution Steps

For the product of three numbers to be equal to zero, at least one of the numbers must be zero. That is, if $xyz = 0$, then either $x=0$ or $y=0$ or $z=0$. It is also possible that two or three of them are zero.

3. Final Answer

At least one of the numbers $x$, $y$, or $z$ must be equal to zero.