[Logo] 25th Nordic Mathematical Contest

The 25th Nordic Mathematical Contest was held on 4 April 2011 hosted by Denmark. At most 20 contestants from each Nordic country were elected by the national secondary school mathematical olympiad organisations:

Four problems were to be solved within four hours. Each contestant normally wrote the exam in her or his own school; in some countries the contest was arranged otherwise. The host issued the exam paper and decided the final ranking based on a preliminary marking within the individual countries. The scores may range from 0 to 20 points with a complete solution of one problem giving 5 points. A diploma of participation has been issued to every participant.