Answer
$\emptyset'=\{ 1,2,3,4,5,6,7,8,9,10 \}$
Work Step by Step
$\bf{\text{Solution Outline:}}$
To get the elements of $
\emptyset'
,$ get the elements of $U.$
$\bf{\text{Solution Details:}}$
The complement of the empty set, denoted by $\emptyset ',$ are all the elements of $U$ that are not in the empty set. These elements are the same elements of $U.$ Hence,
\begin{array}{l}\require{cancel}
\emptyset'=\{ 1,2,3,4,5,6,7,8,9,10 \}
.\end{array}