deasia9 deasia9

20-06-2017
Mathematics

contestada

How many ways can first, second, and third place be awarded in a race of 20 people?

Respuesta :

20-06-2017

That would be 20 x 19 x 18 which equals 6840.
After first place is chosen, 19 spots left and so on.
The answer is 6840 ways.

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