多选题 A colored marble is to be chosen at random from a bag of marbles. The probability that the marble chose will be green is , which of the following numbers could NOT be the total number of marbles in the bag?(Select all such numbers.)
单选题 A moment is randomly selected in the week. What is the probability that this moment will occur during normal business hours (Monday though Friday between 8 a.m. and 5 p.m. )?
单选题 The larger of two numbers exceeds three times the smaller number by 2. The sum of twice the large and 4 times the smaller is 73. If a is the smaller number, which equation below determines the correct value of x?
4 (3a+2) +2a=73
2 (3a+2) +4a=73
2 (3a-2) +4a=73