请教一个数学题 GWD Math2 Q25 （考点：概率）

Lynn322 · 发表于 2010-10-10 16:50:12

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?
这是一道比较常见的概率题，答案给出的是2/9。请教怎么算出来的呢，谢谢！

yyisme · 发表于 2010-10-10 17:02:47

C3 (1)*C2 (1)/ 3 (3)

子夜风衍 · 发表于 2010-10-10 17:31:25

[P(3)3] /3^3

请教一个数学题 GWD Math2 Q25 （考点：概率）

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