I HAVE PURCHASED THIS BOOK. WHEN I READ THIS BOOK I FOUND IT IS NOT WRITTEN IN SIMPLEST LANGUAGE. THE LANGUAGE USED IN THIS BOOK IS HIGH. IT CREATES SOME COMPLEXITIES FOR THE READER . IT LENGTH IS TOO LONG THEREFORE IT WILL BECOME MORE DIFFICULTIES FOR THE GENERAL STUDENT . SO IT TOO MUCH TIME TAKE TO READ IT . IT DOES NOT INCLUDES EVERY TYPE OF QUESTIONS WHICH IS GENERALLY ASKED IN THE COMPETITION EXAM . THERE IS NO HIGH LEVEL PROBLEM GIVEN IN THIS TEXTBOOK . I FOUND THIS BOOK IS NOT USEFUL FOR WEAK STUDENT . IT COST IS ALSO HIGH . It story is also not so good. This book has no capacity to attrack weak student