Focusing on discrete mathematics, this is part of a series which forms the official set of texts for the Associated Examining Board's mathematics syllabus from September 1994. The books also provide a basis for students working towards other AS and A-Level awards, and aim to develop students' awareness of the revelance of maths to other areas of study, to the world of work, to advancing technologies, and to society in general. The course is equally appropriate for those going on to higher education and those who will take their study of mathemetics no further. Each book provides explanations of the key ideas for each topic, exercises to develop and reinforce concepts and techniques, detailed worked examples, and activities and discussion points.