1. Tickets numbered1 to 20 are mixed up and then a ticket is drawn at random. What is theprobability that the ticket drawn has a number which is a multiple of 3or 5?2. A bag contains 2 red, 3 green and 2 blue balls. Two balls are drawn atrandom. What is the probability that none of the balls drawn is blue?3.In a box, there are 8 red, 7 blue and 6 green balls. One ball is pickedup randomly. What is the probability that it is neither red nor green?