The Pearson Guide to Mathematics for the NDA Entrance Examination helps students crack the entrance examination conducted by the Union Public Service Commission (UPSC) to enter the National Defence Academy, a premier inter-services training institution for the future officers of the Indian army, navy and the air force. In this book, logical and methodical problem-solving skills have been explained through a set of graded and solved examples. The arrangement of problems induces an appreciation of mathematics as a problem-solving tool that can be applied in various fields.