A king locked a man in a room with two other men. The room had two doors, one to freedom and the other to prison. The captive had to choose one of the doors. The captive was told that both men knew which door led to freedom. He was allowed to ask each of the two men one question. He knew that one of the men always lied and the other always told the truth, but he didn't know which man was the liar. The captive went free. What questions did he ask?The answer is below , written backwards.