What can i say about amazon. Wonderful delivery... guys amazon is best. I am from northeast. The delivery took just 5 days... really awsome delivery the book gives a clear picture of what to learn from begining and what not to learn for competitive exams. Needed also for sail rrb etc.. if u r preparing. Buy this u will not repent.
Partition of different topics.Very nice paper quality.Amazon packing is very good.Almost all topics are covered that necessary in exams.E explanation of topics with examples.Good one book for competitive examinations.