1. A 9-passenger van shuttles athletes between venues at the Canada Summer Games. If 22 athletes need to get to the track and field stadium, in how many ways can passengers be chosen for

a) the bus's first trip?

b) the bus's second trip?

2. The starting line up for a basketball team is to consist of two forwards and three guards. Two brothers are on the team. Matthew is a forward and Tony a guard. There are four forwards and six guards from which to choose the line up. If the starting players are chosen at random, what is the probability that the two brothers will end up in the starting line up?

3. In a truck meet, five entrants of equal ability are competing. What is the probability that

a) the finish will be in the descending order of the entrants' ages?

b) Sandy will be first?

c) Shanaze is the first and Sandy is second?