Ashipment of 12 microwave ovens contains three defective units. a vending company has ordered four units, and because each has identical packaging, the selection will be random. what is the probability that (a) all four units are good, (b) exactly two units are good, and (c) at least two units are good?

40) linda was making chocolate truffles for the first day of school. the recipe for 20 chocolate truffles is: i cup of cream 2 cups of dark chocolate she noticed this will not be enough truffles for the 42 sure that all students in each homeroom next year. to be sure that all students receive a truffle, linda must adjust her recipe. a. complete the recipe for 42 truffles cups of cream - cups of dark chocolate work: