Step-by-step explanation:
There are 52 cards in a standard deck.
a) There are four 5s (one for each suit), so the probability is 4/52 or 1/13.
b) There are twelve face cards (three for each suit), so the probability is 12/52 or 3/13.
c) There are 40 non-face cards, so the probability is 40/52 or 10/13.