一道GMAT数学题,不太会,请大家帮忙解答一下啊,谢谢
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一道GMAT数学题,不太会,请大家帮忙解答一下啊,谢谢
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
答案是C
会的给个解释吧
谢谢
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
答案是C
会的给个解释吧
谢谢
![一道GMAT数学题,不太会,请大家帮忙解答一下啊,谢谢](/uploads/image/z/4265820-36-0.jpg?t=%E4%B8%80%E9%81%93GMAT%E6%95%B0%E5%AD%A6%E9%A2%98%2C%E4%B8%8D%E5%A4%AA%E4%BC%9A%2C%E8%AF%B7%E5%A4%A7%E5%AE%B6%E5%B8%AE%E5%BF%99%E8%A7%A3%E7%AD%94%E4%B8%80%E4%B8%8B%E5%95%8A%2C%E8%B0%A2%E8%B0%A2)
C 3*2*1 =6 3*3*3=27 6/27=2/9
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