BANGLADESH MATH OLYMPIAD :Let the second differential of all be negative!

WHAT IS BDMO? Bangladesh Math Olympiad (BdMO) is an annual competition that aims to promote mathematical excellence among students.The BdMO is organized by the Bangladesh Math Olympiad Committee, a non-profit organization that was founded in 2001.Prothom Alo and Dutch Bangla Bank are the sponsors of the event. HOW DOES BDMO WORK? There are multiple rounds of competition in the BdMO, which is open to students from grades 3 to 12.The BDMO has four categories :Primary,Junior,Secondary and Higher secondary. Primary category is for students from grade 3 to 5,junior category is for students from grade 6 to 8 ,secondary category is for students from grade 9 to 10 and the higher secondary category is for students from grade 11 to 12.The first round of BDMO is held in different areas in bangladesh.This round is known as Regional round and the members of the math olympiad conduct this round.The test consists of short-answer questions.Mainly Questions are made fro...