Answer
$B\cap A=\{ 4,8 \}$
Work Step by Step
$\bf{\text{Solution Outline:}}$
To get the elements of $
B\cap A
,$ get all the common elements of $B$ and $A$.
$\bf{\text{Solution Details:}}$
The intersection of $B$ and $A,$ given by $B\cap A$, is the set that contains all the common elements of $B$ and $A$.
With $
B=\{2,4,6,8 \}
$ and $
A=\{1,3,4,5,7,8\}
$ then
\begin{array}{l}\require{cancel}
B\cap A=\{ 4,8 \}
.\end{array}
