请教一道概率题 A certain roller coaster has 3 cars, 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 cars 3 times, what is the probability that the passenger will ride in each of the 3 cars? [em03]作者: mary1 时间: 2004-4-23 11:38
1/3^3 .作者: frankdong 时间: 2004-4-26 14:32
怎么算出来的作者: crossmoon 时间: 2004-4-27 23:23
偶也不会算
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