GWD23-29

Q29:

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?

 A.    
0

B.    
1/9

C.    
2/9

D.    
1/3

E.     
1

Answer:   C

我怎么感觉像是3个独立事件呢？那样的话应该是1/27 ???

I thinks the key problem is how to understand the "What is the probability that the passenger will ride in each of the 3 cars?"