By Titu Andreescu

Contained listed below are ideas to hard difficulties from algebra, geometry, combinatorics and quantity thought featured within the prior e-book, including chosen questions (without strategies) from nationwide and neighborhood Olympiads given through the yr 2000. meant for the intense student/problem solver, those books will help to enhance functionality within the Mathematical Olympiad pageant. even though, for these no longer getting into the contest, there's a lot to problem any mathematician, even people with complicated levels. diverse countries have diverse mathematical cultures, so that you will locate that a number of the questions are super tricky and a few relatively effortless. There are a large choice of difficulties in particular from these nations that experience usually performed good within the IMO. a person drawn to mathematical challenge fixing will come across a few appealing arithmetic within the pages of this ebook. while you are as much as a true problem, take a few of these difficulties on!