3. Probability that a family has a car, has a bike, has both a car and a bike is equal to 0.61, 0.25, 0.08 respectively. If we randomly choose a family, calculate the following probabilities (show your works). (Total: 8 marks; 4 marks each) a. Probability that the family does not have a car. b. Probability that the family has at least one of them.