Please answer the following question: Dan has 9 baseball cards, 10 football cards, 5 hockey cards, and 16 basketball cards. Dan will select one card at random. What is the probability that the card selected will be a hockey card or a baseball card? Dan then allow his two friends, Sam and Leo, to each pick a card at random to keep. If Sam goes first and selects a basketball card, what is the probability that Leo will also select a basketball card? Please
