So,
Given that:
[tex]\begin{gathered} U=\mleft\lbrace j,k,l,m,n,o,p\mright\rbrace \\ A=\mleft\lbrace k,l,n,o\mright\rbrace \end{gathered}[/tex]
We want to find the set:
[tex]A^{\prime}[/tex]
A' is the set that excludes the elements of the set A.
As we can see, the set A doesn't have the values:
[tex]k,l,n,o[/tex]
So it should have the other values that the set U actually has. These are:
[tex]A^{\prime}=\mleft\lbrace j,m,p\mright\rbrace[/tex]
