Romania, the place where IMO (International mathematical Olympiad) was held for the first time in 1959. 

Since then it has been held every time except in 1980. That time, it was cancelled due to internal strife in Mongolia.

 It was originally innovated for eastern European member countries of the Warsaw Pact, under the USSR bloc of influence, but latterly other countries shared as well. 

Only in eastern European countries, the IMOs were first oriented and then gradually spread to other nations because of this eastern origin, sources differ about the metropolises hosting some of the early IMOs. 

This may be incomplete because leaders are generally housed well down from the scholars, and incompletely because after the competition, the scholars didn’t always stay grounded in one megacity for the rest of the IMO. 

The precise dates reference may also differ, because of leaders arriving before the scholars, and at more recent IMOs the IMO Advisory Board arriving before the leaders. 

The competition consists of six problems. 

Each question is assigned seven points for a maximum total score of 42 points. 

No calculators are allowed. 

The competition is held over two successive days; each day the rivals have four-and-a-half hours to break three problems. 

The problems chosen are from colourful areas of secondary academy mathematics, astronomically classifiable as a figure, number proposition, algebra, and combinatorics. 

They bear no knowledge of advanced mathematics similar to math and analysis, and results are frequently abelian. 

Still, they’re generally disguised so as to make the results delicate. 

The problems are given in the IMO, and largely acquainted towards creativity, and the capability to break problems snappily. 

Therefore, the prominently featured problems are algebraic inequalities, complex figures, and construction-acquainted geometrical problems, however in recent times, the ultimate has not been as popular as ahead because of the algorithmic use of theorems like Muirhead’s Inequality, and Complex/ Analytic Bash to break problems. 

To a Problem Selection Committee handed by the host country, Other than the host country, each sharing country may submit suggested problems to it which reduces the submitted problems to a shortlist. 

The platoon leaders arrive at the IMO many days in advance of the rivals and form the IMO Jury which is responsible for all the formal opinions relating to the contest, starting with opting the six problems from the shortlist. 

The Jury aims to order the problems so that the order in adding difficulty is Q1, Q4, Q2, Q5, Q3 and Q6, where the First-day problems Q1, Q2, and Q3 are in adding difficulty, and the Alternate day problems Q4, Q5, Q6 are in adding difficulty. 

The Team Leaders of all countries are given the problems in advance of the rivals, and therefore, are kept rigorously separated and observed. 

Each country’s marks are agreed between that country’s leader and deputy leader and fellow handed by the host country (the leader of the platoon whose country submitted the problem in the case of the marks of the host country), subject to the opinions of the principal fellow and eventually a jury if any controversies can not be resolved. 

For the IMO, the process of selection differs greatly by country.

 In many countries, especially those in East Asia, this process involves different tests of difficulty which is analogous to the IMO itself. 

 The Chinese rivals go through a camp. In others, similar to the United States, possible actors go through a series of easier standalone competitions that gradually increase in difficulty. 

In the USA, the tests have the American Invitational Mathematics Examination, the United States of America Mathematical Olympiad, and American Mathematics Competitions, each of which is a competition in its own right. 

For high songwriters in the final competition for the platoon selection, there also is a summer camp, like that of China. 

 In countries of the former Soviet Union and other eastern European countries, a platoon has in history been chosen several times beforehand, and they’re given special training specifically for the event. 

Still, similar styles have been discontinued in some countries. 

 In Ukraine, for case, selection tests correspond to four olympiads similar to the IMO by difficulty and listed. 

Only the results of the present-day selection olympiads are considered while associating the winners. 

 The actors are ranked grounded on their individual scores. 

Orders are awarded to the loftiest ranked actors; slightly smaller than half of them admit an order. 

The cutoffs ( minimal scores needed to admit a gold, tableware or citation order independently) are also chosen so that the figures of gold, tableware and citation orders awarded are roughly in the rates 123. 

The one who doesn’t win an order but who scores seven points on at least one problem admits an honourable citation. 

Special prizes may be awarded for results of outstanding fineness or involving good generalisations of a problem. 

The special prize in 2005 was awarded to Iurie Boreico, a pupil from Moldova, for his result to Problem 3, a three-variable inequality. 

 The rule that at most half the rivals win an order is occasionally broken if it would beget the total number of orders to diverge too much from half the number of rivals.

You can refer to Previous Year Paper for IMO Class 5 Maths 2013

 This last happened in 2010 (when the choice was to give either 226 (43.71) or 266 (51.45) of the 517 rivals ( banning the 6 from North Korea — see below) an order), (20) 2012 (when the choice was to give either 226 (41.24) or 277 (50.55) of the 548 rivals an order), and 2013, when the choice was to give either 249 (47.16) or 278 (52.65) of the 528 rivals an order. 

In these cases, slightly further than half the rivals were awarded an order. 

 In 1991, for cheating at the 32nd IMO, North Korea was disqualified and again at the 51st IMO in 2010. 

It’s the only country to have been indicted of infidelity.