Question 1192387
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<pre>

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 = {{{1/1320}}} = 0.000758.    <U>ANSWER</U>
</pre>

Solved.