The best I liked about this book was the distribution of questions in various types as Type 1 easy questions, type 2 as medium and so on.It also contains High order thinking skills questions ( HOTS) , which needs extra effort to solve the numerical.This type of seggragation is done in every chapter.It also contains solved examples, which have been asked in previous examinations.This book can be used for several competitive exams for engineering, medical and other courses.The problem with this book is that it cuts short the steps of the solved examples.Conclusion, its a fair book to buy.