Let U be the set of natural numbers 1 through 20, let A be the set of even numbers in U and let B be the set of numbers in U that are divisible by 3.
(a) Find $A \cap B$, $A \cup B$, $\bar{A} \cup \bar{B}$, $\bar{A} \cap \bar{B}$
(b) What two pairs of the four sets of part (a) are equal?
(a) List all the elements of each set below.
$A \cap B = $