We have the next sets
[tex]\begin{gathered} U=\mleft\lbrace1,2,3,4,5,6\mright\rbrace \\ A=\mleft\lbrace1,2,3,6\mright\rbrace \\ B=\mleft\lbrace1,2,4\mright\rbrace \end{gathered}[/tex]
And we must find A ∩ B
Then, the repeated elements in sets A and B are
[tex]A\cap B=\mleft\lbrace1,2\mright\rbrace[/tex]
