Art of Problem Solving
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1980 USAMO Problems/Problem 2: Difference between revisions

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== See Also ==
== See Also ==
{{USAMO box|year=1980|num-b=1|num-a=3}}
{{USAMO box|year=1980|num-b=1|num-a=3}}
{{MAA Notice}}


[[Category:Olympiad Number Theory Problems]]
[[Category:Olympiad Number Theory Problems]]

Revision as of 18:10, 3 July 2013

Problem

Find the maximum possible number of three term arithmetic progressions in a monotone sequence of $n$ distinct reals.

Solution

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See Also

1980 USAMO (ProblemsResources)
Preceded by
Problem 1
Followed by
Problem 3
1 2 3 4 5
All USAMO Problems and Solutions

These problems are copyrighted © by the Mathematical Association of America, as part of the American Mathematics Competitions. Error creating thumbnail: Unable to save thumbnail to destination