Mathematics for ijso level

Hey friends,
Many of you is familiar with the ijso competition and also familiar with the hardness of paper.
Today I'm telling about the topics of maths which probably comes in ijso.
1. Number system
2. commercial mathematics
3. Polynomials
4.Linear Inequalities
5.Quadratic Equations
6.progressions
7. Trigonometry
 8.Linear equation in two variables
9.Co-ordinate geometry
10.Sets
11.Triangles and quadrilaterals
12.Circles
13.Mensuration