Problems involving "Knights and Knaves" (truth-tellers and liars).
This usually takes place in November and December. Answers are published on the websites of local education committees (e.g., vos.olimpiada.ru for Moscow) shortly after the event. otvety na vserossiiskoi olimpiade po matematike 7 klass
If you are looking for a from a recent test, please provide the text of the question, and I can help you solve it step-by-step. otvety na vserossiiskoi olimpiade po matematike 7 klass
Specifically for 7th and 8th graders looking for higher-level problems and their solutions. Typical Problem Structure for Grade 7 otvety na vserossiiskoi olimpiade po matematike 7 klass
Finding properties that don't change after certain operations. Parity: Using even and odd numbers to prove impossibility.
The main portal for the School Stage. It provides "auto-checking" results and detailed analysis of every problem version.