5. (20) A train hobo has 4 six-sided dice in his pocket. Three of them are \"regular\"their faces are numbered 1 through 6but the fourth is \"rigged\"two faces show the number 1, two faces show the number 3, and two faces show the number 5. Use these dice to answer the following: 5.1. (6) If he tosses all 4 dice at once, what is the probability that at least one of them lands on an even number? 5.2. (7) If he picks a die out of his pocket without looking and tosses it, what is the probability that it lands on an odd number? 5.3. (7) If he picks a die out of his pocket without looking, tosses it, and it lands on an odd number, what is the probability that the die he rolled is \"regular\