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Ten athletes are running a 100 meter race. In how many different ways can the first three places be filled?
 2 years ago
 2 years ago
order Group Title
Ten athletes are running a 100 meter race. In how many different ways can the first three places be filled?
 2 years ago
 2 years ago

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Walleye Group TitleBest ResponseYou've already chosen the best response.0
do you know how to use "n choose r"
 2 years ago

Tomas.A Group TitleBest ResponseYou've already chosen the best response.1
no you need to use permutations
 2 years ago

order Group TitleBest ResponseYou've already chosen the best response.0
Yes, permutations
 2 years ago

Tomas.A Group TitleBest ResponseYou've already chosen the best response.1
so use them :D
 2 years ago

cathyangs Group TitleBest ResponseYou've already chosen the best response.0
that would be nPr. this would be 10P3
 2 years ago

order Group TitleBest ResponseYou've already chosen the best response.0
I'm not sure how to in this question.
 2 years ago

slaaibak Group TitleBest ResponseYou've already chosen the best response.0
10 * 9 * 8 y0
 2 years ago

Tomas.A Group TitleBest ResponseYou've already chosen the best response.1
total number 10, first three places is 3 and then go to your calculator
 2 years ago

order Group TitleBest ResponseYou've already chosen the best response.0
Ah Ok... Thank you!
 2 years ago

slaaibak Group TitleBest ResponseYou've already chosen the best response.0
First place can be held by any one of the 10. Nine people remain. Now second place can be held by any of the 9. 8 people remain. Now third place can be held by any of the 8. Therefore: 10 * 9 * 8
 2 years ago
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