Show that (Ac ∩ Bc)c = A ∪ B and (Ac ∪ Bc)c = A ∩ B. Consider rolling a six-sided die once. Let A be the set of outcomes where an odd
number comes up. Let B be the set of outcomes where a 1 or a 2 comes up. Calculate the sets on both sides of the equalities in part (a), and verify that the equalities hold.