Consibeder the set of cards in a standard 52-card deck. Let S be the set of all spades, let D be the set of all diamonds, and let H be the set of all honor cards (10,J, Q, K, A are honor cards). Recall the A with a line on the top of it is the complements of the set A. Describe the following sets in words, such as " the set of all spades that are not honor cards", and count the number of elements in each set:
S upside down u H, D upsidedown u Swith a line over it, d u S, (S u D) upside down u H.