04.Name: Fifty Challenging Problems in Probability with Solutions
05.Name: Problems in Elementary Number Theory
06.Name: Methods of Solving Number Theory Problems
04.Name: An Introduction to Diophantine Equations (A Problem based-Approach)
05.Name: Basics of Olympiad Inequalities (Samin Riasat Nayel)
01.Name: Class 9-10 Higher Mathematics Geometry (Old Syllabus Bangla)
05.Name: Challenging Problems In Geometry (Alfred S. Posamentier)
06.Name: Geometry Unbound
07.Name: 103 Trigonometry Problems (From the Training of the USA IMO Team)
04.Name: Counting (1st Edition-Meng, Guan WS-2002)
05.Name: Counting (2nd Edition - Meng, Guan WS-2013)
06.Name: Mathematical Circles (Russian Experience)
07.Name: Principles and Techniques in Combinatorics (WS, 1992)
08.Name: Pigeonhole Principle (Bangla)
09.Name: Notes on Combinatorics (By Tarik Adnan Moon-Bangla)
10.Name: A Path to Combinatorics for Undergraduates (Counting Strategies)
04.Name: How to Solve It (A New Aspect of Mathematical Method)
05.Name: Mathematical Olympiad in China-Problems and Solutions
06.Name: Mathematical Problem Solving
07.Name: Problem Solving strategies for Math Olympiads
08.Name: Exploring Mathematics Problem Solving and Proof
09.Name: Functional Equations and How to Solve Them (Problem Books in Mathematics)
10.Name: The USSR Olympiad Problem Book
11.Name: Problems for the Mathematical Olympiads (From the First Team Selection Test to the IMO)
12.Name: The IMO Compendium (1959 to 2009)