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- 精华
- 0
- 积分
- 355
- 经验
- 355 点
- 威望
- 0 点
- 金钱
- 570 ￥
- 魅力
- 183
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GWD-1的排列组合题1
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 probablity that the passenger will ride in each of the 3 cars?
a. 0
b. 1/9
c. 2/9
d. 1/3
e. 1
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