please solve my question ,

\f(a) A box contains 4 blue, 2 red and 3 black balls. If a ball is drawn at random from the box, replaced and the process is repeated 2 more times, what is the probability of drawing 2 blue balls and 1 red ball? (b) A survey was taken of a group's viewing habits for entertainment show on TV during the last year. Let A: watch game show B: watch singing contest C: watch comedy show If a person is selected from this group of people, the probability is given as P(A) = 0.43, P(B) = 0.40, P(C) = 0.32, P (An B) = 0.29, P (An C) = 0.22, P (B n C) = 0.20, P(An B n C) = 0.15. Find the probability that this person watched: (i) either A or B or both (1i) At least one of this entertainment show (iii) None of the show