SOLUTION: there are 12 runners in mountain and all have equal chance of winning what is the probability that a person may win a bet on the race if he has to correctly select top 3 runners an

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Question 1192387: there are 12 runners in mountain and all have equal chance of winning what is the probability that a person may win a bet on the race if he has to correctly select top 3 runners and the order they finish in?
Answer by ikleyn(52855) About Me  (Show Source):
You can put this solution on YOUR website!
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There are 12*11*10 winning ordered sequences of 3 runners out 12 runners.


    12*11*10 = 1310 winning ordered sequences.



Of them, only one sequence really wins, so the probability to guess correctly is


    P = 1%2F1320 = 0.000758.    ANSWER

Solved.