Answer to Question #325616 in Discrete Mathematics for shadi

Question

An urn contains 5 red balls and 6 blue balls. A ball is drawn randomly, its colour is noted, and then the ball is replaced in the urn. If this process is repeated four times: 

⦁ What is the probability of getting two red balls and 2 blue balls?

⦁ What is the probability that all 4 balls are of the same colour?

⦁ What is the probability that the first red ball is drawn in the 4th trial?