标题: 求教一题数学题 [打印本页] 作者: baby0085 时间: 2009-12-18 17:27 标题: 求教一题数学题 a certain rooller coaster has 3 cars, and a passenger is equally likely to ride in any 1 of 3 cars each time that passenger rides the rolller coaster. if a certain passenger is to ride the rooller coaster 3 times, what is the probability that the passenger will ride in each of the 3 cars?