An urn contains 8 red balls and 7 blue balls. (a) Choose 5 balls at random without replacement. What is the probability of getting 3 red balls and 2 blue balls? [5] (b) Choose 5 balls at random with replacement. What is the probability of getting 3 red balls and 2 blue balls? [5] (c) Choose 5 balls at random. After each draw, replace the drawn ball to the urn and add another ball of the same type to the urn. What is the probability of getting 3 red balls and 2 blue balls