Hello!
First, let's write the information that we know and then each event:
[tex]Set=\mleft\{1,2,3,4,5,6,7,8,9,10\mright\}[/tex]When we use the interception symbol (∩), it means that we want to know which numbers are part of both sets simultaneously.
Let's calculate it:
[tex]A\cap B=\mleft\lbrace8,10\mright\rbrace[/tex]