Q2 :

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 passerger will ride in each of the 3 cars?

A. 0

B. 1/9

C. 2/9

D. 1/3

E. 1

对我的难度有2:

１．一开始没看懂题意, 做错; 后再三细读, 似懂非懂, 给帮忙的人也都解释糊涂了, 望nn能给予题意翻译, 以正视听;

2. 懂得是多次重复独立试验后, 因为没有确定k的值,所以,怎么也得不出答案的2/9.

P33/3x3x3=2/9

我是这样做的！