Start of the qual­i­fy­ing round

Here is the qual­i­fy­ing (remote) round of the com­pet­i­tion. You can solve prob­lems until 23:59:59 UTC, 10 Novem­ber 2021 inclus­ively.

Please remem­ber that your solu­tion of every prob­lem should include not only the right answer but the full reas­on­ing as well.

We will be happy if your friends who like math­em­at­ics also par­ti­cip­ate. How­ever, every assign­ment should be done indi­vidu­ally; oth­er­wise, your sub­mis­sion will not be con­sidered. The win­ners of Olympi­ad 2019/20 (those with Dip­lo­mas I‑III) can par­ti­cip­ate dir­ectly in the final round.

Prob­lems

How to sub­mit solutions

The solu­tions should be writ­ten in Eng­lish, Esper­anto, French, Geor­gi­an, Ger­man, Kaza­kh, Per­sian, Romani­an, Rus­si­an, Span­ish, Thai, Turk­ish, Ukrain­i­an, Hebrew or Uzbek. Use of oth­er lan­guages should be agreed with the organ­izers in advance.

The solu­tions should be sub­mit­ted to the Jury by Novem­ber 10 in our inform­a­tion system:

You can upload both text files (in TXT, DOC, DOCX or PDF formats) and scans of paper works (in JPG and PNG formats):

  • each solu­tion must be in it’s own file,
  • the total num­ber of files should not exceed 10,
  • the files should not con­tain the sur­name, name and oth­er per­son­al data of the participant,
  • you do not need to repeat the text of the prob­lems in your paper.
From now on the only way
to upload your solu­tions of the qual­i­fy­ing round
is in our inform­a­tion system!

Any ques­tions?

You can send your ques­tions (but not the solu­tions of prob­lems) to the organ­izers to [email protected]​formulo.​org.

Also you can refer any ques­tions about our sys­tem by e‑mail: [email protected]​formulo.​org.

GOOD LUCK!