NTSE Study Guide, the first among two volumes, is meant primarily for initial preparation (the second volume NTSE Refresher Course is meant for final preparation (Stage I and Stage II)). This book covers all the subjects/topics/ sub-topics tested in Stage I and Stage II examinations. The theory for each chapter captures the salient points in a lucid manner and explains the concepts with the help of examples. Practice Exercises at the end of each chapter seek to cover all the concepts included in the NTSE syllabus as well as important questions from the actual exams (State Level). Answer Keys and Detailed Solutions for all questions are provided separately.