Visit the link below to have access to Nigerian Mathematics Olympiad past questions.
You can reach out to us if you need any help with the questions.
https://drive.google.com/drive/folders/1XteR-HdCNHRhhYf57WVrVx6-ecJ1d3ut
Here is a list of Olympiad Books to prepare for Mathematics competitions around the world.
The books are classified according to Beginner, Intermediate and Advanced levels.
Secrets in Inequalities – Pham Kim Hung
Topics in Algebra and Analysis – Radmila Bulajich Manfrino, José Antonio Gómez Ortega, and Rogelio Valdez Delgado
Topics in Inequality and Analysis – Titu Andresecu
Complex Number from A-Z Polynomial articles – Yufei Zhao, Alex Remorov
Functional Equations – Titu Andresecu
Euclidean Geometry in Mathematical Olympiads – Evan Chen.
A Beautiful Journey Through Olympiad Geometry – Stefan Lozanovski.
Intermediate Counting and Probability – David Patrick (AoPS)
Problem-Solving Methods in Combinatorics – Pablo Soberon.
Number Theory for Mathematical Contests – David A. Santos.
Olympiad Number Theory Through Challenging Problems – Justin Stevens.