Respuesta :

Zac555
ahh..this is sets topics - A U B = all the elements found in A and B. But do note, do not repeat the elements if it is the same. And if the question were to ask : n(AUB) = total number of elements found in A and B.
kelpel197
A [tex]U[/tex] B means everything in A and B, so,
A  [tex]U[/tex] B = {a, e, i, o, u, l. g, b, r } 
Hope this helped!