PP2 PS 115

[lovelymaomo[origen]]

115.
A certain roller coaster has 3 cars, and a passenge is equally likely to ride in any 1 of the 3 cars each time that passenger
rides the roller coaster . If a certain passenger if to ride the roller coaster 3 times, what is the probability that the passenger will ride in each of the 3 cars?

想請大家指導我一下這題該如何解呢?
謝謝大家:)

[christinehsu]

因為不知道正確答案為何，所以也不確定自己的方向是否正確，歡迎討論。

有三節車廂，問依乘客搭乘該列車三次，分別做各車廂一次的機率為何?

3*2*1/3*3*3= 2/9

分子為各搭一次的組合。 分母為全部的組合