Preparation material
Olympiad level
College level
Other
Recommended Books
Follow this link for the list of useful books about math competitions.
 
Practice tests
Multiple choice tests
The following link will generate a test from a database of problems similar to those that appear on multiple choice mathematical competitions (e.g. AMC).
Generate test
Other tests
These tests are similar to AIME. Each problem has a solution that is a nonnegative integer, and you need to enter the solution in the box provided. You may want to try these tests more than once because once the program has determined that you solved the problems, you will be offered a new problem set.
Problems from Journals
Many mathematical journals have a problem section publishing various problems. We try to gather such problems. If you have anything of this kind, we will appreciate receiving it.
For now we offer two problem sets with 1878 problems in total.
 Mathscope 
a collection of problems selected from Vietnamese math journals (particularly Mathematics and the Youth from the last 10 years), compiled by Phạm Vǎn Thuận. At this moment it contains 424 problems. (Updated: February 12, 2007)
 Collection of Inequalities  a collection of inequalities published in various math journals (a majority in Crux Mathematicorum) and books, compiled by Eckard Specht. At this moment it contains 1454±ε problems. (Updated: October 22, 2006)
