1. Problem 3.12, page 1 10. There are 40 pairs of shoes in Bill's closet. They are all mixed up. (a) If 20 shoes are picked, what is the chance that Bill's favorite sneakers will be in the group? (b) If 20 shoes are picked, what is the chance that one shoe from each pair will be represented? (Remember, a left shoe is different than a right shoe.)