QUESTION 4 (10 MARKS) Sufi plans to buy a new car. The probability that he will get a buyer for his old car is =. The probability that Sufi will buy a new car if he gets a buyer for his old car is 2. On the other hand, the probability that Sufi will still buy a new car even though he fails to get a buyer for his old car is =. (a) Draw the three diagrams (3 marks) (b) Find the probability that Sufi will buy a new car (3 marks) (c) If it is known that Sufi did not buy a new car, what is the probability that he will fail to get a buyer for his old car? (4 marks)