Thank you so much for participating in the Online Challenge. This year nearly 30,000 students from all over the world registered for the Online Challenge, which serves as a qualifier for the Russian Math Olympiad: a challenging Olympiad in the tradition of European mathematical olympiads with complex problems that promote a deeper level of thinking for even the most advanced students. The RMO was originally designed to be an in-person 75-minute test along the lines of a traditional math olympiad. However, in order to ensure the health and safety of our students our team will be conducting the RMO online this year.
If your child participated in the Online Challenge and qualifies for the Russian Math Olympiad, you will receive an email invitation with instructions and details about the next step in the middle of March.
Too many parents discover their child’s gaps in mathematics when it’s too late to do something about it. As with anything else, the earlier in a child’s development that you begin to work on something—be it sports, music, or math—the stronger grasp of the subject the child has. In today’s global world, a solid math foundation is important for more than acing standardized tests and getting into top universities; it is also crucial for empowering young minds to think, reason, and later compete for a variety of sought-after careers with their international peers. The International Math Contest is a 30-minute Online Challenge based on leading math curricula from across the world. Developed by math professionals with decades of experience at the Russian School of Mathematics, the contest is specifically designed to give parents insight into how their child’s math knowledge ranks globally.
The Online Challenge also serves as a qualifier for the Russian Math Olympiad: a challenging Olympiad in the tradition of European Mathematical Olympiads with complex problems that promote a deeper level of thinking for even the most advanced students.
On Monday morning, a puppy weighed 11 pounds. The puppy's owner weighs him twice a day. The puppy loses 1 pound by every evening, and gains 3 pounds by every morning. How many pounds will the puppy weigh by Thursday evening of the same week?
A very hungry hippo can eat 25 kilograms of grass in 50 minutes. How many minutes will it take the hippo to eat 60 kilograms of grass?
The top of a square table is covered with four equal square tiles. If the side length of each tile is decreased by 75%, how many tiles of the new size would be needed to cover the same table?
Leah said on her birthday: “Today I am exactly three times as old as I was four years ago.“ And that was true. In how many years can Leah truthfully say on her birthday: “Today I am exactly twice as old as I was four years ago“?
A fruit drink is made from 25% pure fruit juice and the rest water. A barrel contained some amount of this fruit drink, but then by mistake, 60 liters of water was added to the barrel. How many liters of pure fruit juice must be added to the barrel to correct the mistake, so the barrel would again contain fruit drink with 25% pure fruit juice?
A bag contains 18 small red, 19 small black, 13 large black, and 15 large red T-shirts, and nothing else. What is the least number of T-shirts Alpa must take out of the bag (without looking at them) to be absolutely sure of having at least two T-shirts among them that differ only by size or only by color?