## Precalculus (6th Edition)

$M \text{ or } \left\{0, 2, 4, 6, 8\right\}$
$x \in M$ and $x \in Q$ means that the elements of the given set are in M and also in Q. This is actually the definition of the intersection of the sets M and Q. Thus, the given set is equivalent to: $M \cap Q = \left\{0, 2, 4, 6, 8\right\}=M$