OMO Problems

Fall 2017

OMO Fall 2017 Problems
OMO Fall 2017 Solutions
Results
Statistics
Top Teams

Clarifications/Updates

17) The function v_2(n) gives the largest integer k such that 2^k divides n. For example, v_2(5)=0 and v_2(48)=4.
19) Distance is Euclidean.
24) There are 66 states, not 50.

Below are problems, solutions, and results for all the past OMO contests. You can also find all the problems (and discussion) on the Art of Problem Solving site.

Fall 2017 Results

OMO Fall 2017 Problems
OMO Fall 2017 Solutions
Results
Statistics
Top Teams

Spring 2017 Results

OMO Spring 2017 Problems
OMO Spring 2017 Solutions
Results
Statistics
Top Teams

Fall 2016 Results

OMO Fall 2016 Problems
OMO Fall 2016 Solutions
Results
Statistics
Top Teams

Spring 2016 Results

OMO Spring 2016 Problems
OMO Spring 2016 Solutions
Results
Statistics
Top Teams

Fall 2015 Results

OMO Fall 2015 Problems
OMO Fall 2015 Solutions
Results
Statistics
Top Teams

Spring 2015 Results

OMO Spring 2015 Problems
OMO Spring 2015 Solutions
Results
Statistics
Top Teams

Fall 2014 Results

OMO Fall 2014 Problems
OMO Fall 2014 Solutions
Results
Statistics
Top Teams

Spring 2014

OMO Spring 2014 Problems
OMO Spring 2014 Solutions
Results
Statistics
Top Teams

Fall 2013

Problems
Solutions
Results
Statistics
Top Teams

Winter 2013

Problems
Solutions
Problem Statistics
Results
Top Teams

Fall 2012

Problems
Solutions
Problem Statistics
Results
Top Teams

Winter 2012

Problems
Solutions
Problem Statistics
Results
Top Teams