Metashkola Olimpiada Po Matematike Zadaniia Info

Platforms like YouTube offer walkthroughs for similar Russian-style olympiad problems.

A three-digit number is divisible by 9. If you swap the first and last digits, the new number is also divisible by 9. How many such numbers exist where the middle digit is 5? Part 3: Geometry & Spatial Thinking (15 points each) metashkola olimpiada po matematike zadaniia

The MetaShkola website (Russian language) provides past problems and solutions. How many such numbers exist where the middle digit is 5

At a math circle meeting, 10 students met. If every student shook hands with every other student exactly once, how many handshakes were there in total? If every student shook hands with every other

A farmer needs to transport a wolf, a goat, and a cabbage across a river in a boat that can only hold himself and one other item. If left alone, the wolf eats the goat, and the goat eats the cabbage. How many trips across the river are required to get everyone safely to the other side?