Difference between revisions of "2006 AIME A Problems/Problem 10"

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== Solution ==
 
== Solution ==
 
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{{solution}}
 
== See also ==
 
== See also ==
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*[[2006 AIME II Problems/Problem 9 | Previous problem]]
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*[[2006 AIME II Problems/Problem 11 | Next problem]]
 
*[[2006 AIME II Problems]]
 
*[[2006 AIME II Problems]]
 
 
[[Category:Intermediate Combinatorics Problems]]
 
[[Category:Intermediate Combinatorics Problems]]

Revision as of 20:12, 8 November 2006

Problem

Seven teams play a soccer tournament in which each team plays every other team exactly once. No ties occur, each team has a $50\%$ chance of winning each game it plays, and the outcomes of the games are independent. In each game, the winner is awarded a point and the loser gets 0 points. The total points are accumilated to decide the ranks of the teams. In the first game of the tournament, team $A$ beats team $B.$ The probability that team $A$ finishes with more points than team $B$ is $m/n,$ where $m$ and $n$ are relatively prime positive integers. Find $m+n.$

Solution

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See also