A number of texts and solutions are in the market which seem helpful in the examination. In the preparation of this book, I considered some very important points which rarely found. These features are resultant of many years experience and series of discussions with the students regarding their difficulties in the subject.

After completing each topic, a student usually has a blurred idea about When student undergoes the practice tests, the fog settles down and concepts become crystal clear. The best part for the practice is examination questions. If these questions are randomly picked in the beginning, student faces some difficult question of the topic at start, the ideas in his mind are jumbled and even an easy topic becomes so hard that sometimes it becomes amazing for an experienced teacher.