Respuesta :

The intersection of two sets A and B is defined as the set composed by the elements appearing in both A and B.

So, the intersection is

[tex]A\cap B = \{5,11\}[/tex]

Because all the other numbers do not belong to both sets:

  • 2, 3 and 7 belong to A alone
  • 13, 15 and 17 belong to B alone
  • 5 and 11 belong to both A and B