Question

Select the correct choice for now and if necessary fill in the answers box to complete your choice

Answer 1

We have

`\begin{gathered} (A\cup B)^(\prime)=U-(A\cup B)=\mleft\lbrace1,2,3,4,5,6,7\mright\rbrace-\mleft\lbrace2,3,4,5,6\mright\rbrace \\ (A\cup B)^(\prime)=\mleft\lbrace1,7\mright\rbrace \end{gathered}`

Answer: A.

`(A\cup B)^(\prime)=\lbrace1,7\rbrace`