The general election is today, and volunteers are organizing the ballots. Depending on the part of the city in which a citizen lives, he or she receives a different ballot. The types of ballots consist of RED ballots numbered 1, 2, 3, 4 and BLUE ballots numbered 1, 2, 3, 4 Let R be the event of drawing a red ballot, B the event of drawing a blue ballot, the event of drawing an even numbered ballot, and the event of drawing an odd ballot