Discussion:
Q1: A prisoner escapes from jail. There are three roads leading away from the jail. If the prisoner selects road A to make her escape, the probability that she succeeds is 1/4. If she selects road B, the probability that she succeeds is 1/5. If she selects road C, the probability she succeeds is 1/6. Furthermore, the probability that she selects each of these roads is the same. It is 1/3rd. If the prisoner succeeds on her escape, what is the probability that she made good her escape by using road B?
Q2: Six men and four women are standing around a table that has four chairs. If four people are selected randomly to sit at the table, what is the probability that two men and two women will be selected?