On a one-way street, an unending sequence of cars of width a, length b passes with velocity v. The cars are separated by the distance c. A pedestrian crosses the street perpendicularly with velocity w, without paying attention to the cars.(a) What is the probability that the pedestrian crosses the street uninjured?(b) Can he improve this probability by crossing the road in a direction other than perpendicular? probabilityLaTeXcombinatorics unsolvedcombinatorics