by Khee Meng Koh (National University of Singapore, Singapore) & Eng Guan Tay (Nanyang Technological University, Singapore)

About Khee Meng Koh

About Eng Guan Tay

This book is a useful, attractive introduction to basic counting techniques for upper secondary and junior college students, as well as teachers. Younger students and lay people who appreciate mathematics, not to mention avid puzzle solvers, will also find the book interesting. The various problems and applications here are good for building up proficiency in counting. They are also useful for honing basic skills and techniques in general problem solving. Many of the problems avoid routine and the diligent reader will often discover more than one way of solving a particular problem, which is indeed an important awareness in problem solving. The book thus helps to give students an early start to learning problem-solving heuristics and thinking skills.

An errata to the book is available. Click here to download the pdf.

• The Addition Principle
• The Multiplication Principle
• Subsets and Arrangements
• Applications
• The Bijection Principle
• Distribution of Balls into Boxes
• More Applications of (BP)
• Distribution of Distinct Balls into Distinct Boxes
• Other Variations of the Distribution Problem
• The Binomial Expansion
• Some Useful Identities
• Pascal's Triangle
• Miscellaneous Problems