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A certain roller coaster has 3 cars, and a passenger is

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Director
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Joined: 08 Jun 2004
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Location: Europe
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A certain roller coaster has 3 cars, and a passenger is [#permalink] New post 12 Apr 2006, 18:59
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


Please explaine your answer.
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Re: Probability: Roller coaster [#permalink] New post 12 Apr 2006, 19:32
M8 wrote:
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



total = 3x3x3 = 27
chances are = 123, 132, 213, 231, 312, 321. so total= 6
p = 6/27 = 2/9
Re: Probability: Roller coaster   [#permalink] 12 Apr 2006, 19:32
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A certain roller coaster has 3 cars, and a passenger is

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