A certain roller coaster has 3 cars, and a passenger is equally likely to ride in any 1 of the 3 cars each time that passenger rides the roller coaster. If a certain passenger is to ride the roller coaster 3 times, what is the probability that the passenger will ride in each of the 3 cars?
0
1/9
2/9
1/3
1
答案：C
我算的是1/27
请老师帮忙看看作者: myice 时间: 2010-7-2 10:49
3*2*1=6，一共是3*3*3，所以概率为2/9
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