What are all the ways in which the top 4 racers in a 20 person race can finish?
Introduction:
In the given situation, the number of persons participated in the race is 20. The requirement is the top 4 racers.
Find the number of ways in which the top four racers in a 20 person race can finish:
The total number of racers is 20.
The required number of top racers is 4.
The number of ...
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