9. 400 individuals in a workplace are interviewed to see whether they own a house and a car. It was found that 275 owned a car and 250 owned a house. Out of the car owners, 190 also owned a house and 65 owned neither a house nor a car. Find the probability that a person chosen at random 1. Does not own a house 2. Does not own a car 3. Owns a car or does not own a house 4. Owns a house or does not own a car 5. Owns a car given that he owns a house 6. Owns a house given that he owns a car 7. Verify that the events that a person chosen at random owns a house and owns a car are independent and mutually exclusive events