5.1   The contest element of the IMO 2007 will take place in Hanoi on July 25 and 26, 2007 (the "Contest"), under the direction of the Chief Invigilator appointed by the IMO 2007 Organizing Committee. On each day of the Contest the examination will start in the morning and last for 4 and a half hours. Each of the two examination papers will consist of three problems.

5.2   The problems will be given to each Contestant in his/her own language. On request a Contestant may receive the problems in one other language, provided that the Jury (as defined in 6.1) has approved the relevant translation.

5.3   Each Contestant must work independently and submit solutions in his/her own language. The solutions must be written on answer sheets provided by the IMO 2007 Organizing Committee. Contestants must write on only one side of each answer sheet.

5.4   The only instruments permitted in the Contest will be writing and drawing instruments, such as rulers and compasses. In particular, books, papers, tables, calculators, protractors, computers and communication devices will not be allowed into the examination room.

5.5   Members of the Jury, Observers and any others who have sight of the problems and solutions before the examinations shall do their utmost to ensure that no Contestant has information, direct or indirect, about any proposed problem. They must also ensure that all Contest problems and solutions are kept strictly confidential until after the entire Contest has finished. They will be barred, except for the case of emergency, from having any external communication with Contestants, Deputy Leaders (and accompanying Observers) until the time of the conclusion of the examination. The IMO 2007 Organizing Committee will provide proper assistance in case of an emergency.

5.6   The total number of prizes will not be more than half the total number of Contestants. The numbers of first, second and third prizes will be approximately in the ratio 1:2:3.

5.7   Special prizes may be awarded for solutions considered outstanding by the Jury.

5.8   The prizes will be awarded at the Closing Ceremony. Each Contestant, who has not received a first, second or third prize will receive a Certificate of Honorable Mention if he/she has received seven points for at least one solution.

5.9   Each Contestant shall receive a Certificate of Participation.