Difference between revisions of "1999 AIME Problems/Problem 13"

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== See also ==
 
== See also ==
* [[1999_AIME_Problems/Problem_12|Previous Problem]]
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{{AIME box|year=1999|num-b=12|num-a=14}}
* [[1999_AIME_Problems/Problem_14|Next Problem]]
 
* [[1999 AIME Problems]]
 

Revision as of 18:26, 14 October 2007

Problem

Forty teams play a tournament in which every team plays every other team exactly once. No ties occur, and each team has a $\displaystyle 50 \%$ chance of winning any game it plays. The probability that no two teams win the same number of games is $\displaystyle m/n,$ where $\displaystyle m_{}$ and $\displaystyle n_{}$ are relatively prime positive integers. Find $\displaystyle \log_2 n.$

Solution

See also

1999 AIME (ProblemsAnswer KeyResources)
Preceded by
Problem 12
Followed by
Problem 14
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All AIME Problems and Solutions