This is a companion to the book Introduction to Graph Theory (World Scientific, 2006). The student who has worked on the problems will find the solutions presented useful as a check and also as a model for rigorous mathematical writing. For ease of reference, each chapter recaps some of the important concepts and/or formulae from the earlier book.

Through automation and miniaturisation, microelectronics has vast potential for thrusting society into a new phase. It promises to revolutionise the information handling aspects of our lives. But to gain maximum benefit from this breakthrough, microelectronics must be harnessed to society's needs. To help this process a multidisciplinary group of authors has prepared a report to the Club of Rome on the likely impact of microelectronics on our futures