• almost 600 questions arranged topically for rapid drilling • complete and true encyclopedia of question-types • include latest “trick” questions • answer keys provided • complete step-by-step solutions sold separately • complete and concise eBook editions available • Books available for other subjects including Physics, Chemistry, Biology, Mathematics, Economics, English • Primary level, Secondary level, GCE O-level, GCE A-level, iGCSE, Cambridge A-level, Hong Kong DSE • visit www.yellowreef.com for sample chapters and more

• almost 300 questions arranged topically for rapid drilling • complete and true encyclopedia of question-types • include latest “trick” questions • answer keys provided • complete step-by-step solutions sold separately • complete and concise eBook editions available • Books available for other subjects including Physics, Chemistry, Biology, Mathematics, Economics, English • Primary level, Secondary level, GCE O-level, GCE A-level, iGCSE, Cambridge A-level, Hong Kong DSE • visit www.yellowreef.com for sample chapters and more

A good foundation during the lower secondary years goes a long way towards preparing a student for the O-level examinations. The lower secondary challenging drill solutions do just that by providing step-by-step worked solutions to the challenging drill questions to enhance understanding and learning. This book contains almost 600 solutions covering comprehensively all school examination question−types. You will find our approach in the book refreshing and it ABSOLUTELY saves time by providing an efficient learning system.