SOLUTION: ten people are entered in a race. if there's no ties, in how many ways can the first two places come out?

SOLUTION: ten people are entered in a race. if there's no ties, in how many ways can the first two places come out?

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Question 298505: ten people are entered in a race. if there's no ties, in how many ways can the first two places come out?
Answer by user_dude2008(1862) (Show Source): You can put this solution on YOUR website!
10*9 = 90 ways
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