10 people are competing in a spelling bee. How many possible ways can 1st place, 2nd place and rd place be awarded?

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15-04-2018
Mathematics

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10 people are competing in a spelling bee. How many possible ways can 1st place, 2nd place and rd place be awarded?

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Аноним Аноним · Answer 1 · 2018-04-15T05:19:10+02:00

Аноним Аноним

15-04-2018

1st place has 10 possible people
2nd place has 9 possible people
3rd place has 8 possible people
10 × 9 × 8 = 720

or you could use permutation (order matters)
10P3 = 720
nPr

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