IYMC(International Youth Math Challenge) is an annual international competition for any student under the age of 26.This competition has 3 rounds:Qualification round, Pre-final round and final round. It is free to participate in the qualification round. If you you pass the qualification round then you will have to pay a fee of 11 euro to participate in the Pre-final round;there is no further cost. Anyone willing to participate this competition must solve the problem before 30 November and submit it. If you are willing to participate you will find the question https://iymc.info/docs/problems/2025/Qualification/en/IYMC_Qualification_Round_2025.pdf here. For further information please check the official IYMC page. I am an official IYMC Ambassador. Please, select my name(Md. Sunan Bin Hasan) as your ambassador or simply submit your answers IYMC | International Youth Math Challenge in this link. Don’t forget to confirm me as your IYMC ambassador in the confirmation e-mail.