The Union Public Service Commission (UPSC) conducts the National Defence Academy (NDA) and Naval Academy (NA) entrance examination for recruiting male Indian nationals to the Army, Navy & Air Force Wings of the NDA and Indian Naval Academy (INA).This book has been specially designed for the candidates aspiring to clear the NDA/NAEntrance Examination conducted by UPSC. The present book for NDA & NA Entrance Examination has been divided into five sections namely Mathematics, General English,General Science, Current Affairs and General Studies, each sub-divided into number of chapters as per the syllabi of the NDA & NA Entrance Examination. The book contains chapterwise division of previous years papers of NDA/NA Entrance Examination to help students get an insight into the examination pattern of NDA/NA Entrance Examination. More than 8000 MCQs from previous years papers of NDA Examination will help the aspirants familiarizethemselves with the current trends in the examination and types of questions asked therein. The Mathematics section has been divided into 28 chapters namely Number System, Time & Distance, Percentage, Profit & Loss, Logarithm, Rational Expressions, Linear Equations, Set Theory, Height & Distance, Triangles, Circle, Locus, Statistics, etc whereas the English section has been divided into nine chapters namely Spotting the Errors, Vocabulary, Synonyms, Antonyms, Idioms & Phrases, Comprehension, Fill in the Blanks & Close Test, Sentence Improvement and Ordering of Words/ Sentences. Each chapter in the book contains detailed theoretical content and ample number of solved problems which have been designed on the lines of questions asked in previous years NDA/ NA entrance examinations. Exercises with sufficient number of objective questions have been given to help the aspirants practice to solve the questions of varied difficulty levels. As the book contains ample study and practice material along with a collection of plenty of previous years solved papers, it for sure will prove to be a Complete Self Study Guide for 2017 NDA/ NA Examination.