This winsome book is specially published for the aspirants of ‘SSC CHSL (10+2) – Data Entry Operator (DEO)/Lower Division Clerk (LDC)/Junior Secretarial Assistant (JSA) TIER I Exam’. The book comprises, along with the latest study and practice material, Solved Previous Years' Papers which will prove extremely useful for readers to be well-conversant with the exam pattern, the type of questions asked and their answers.Salient Features of the Book:• The book contains specialised study and practice material on all the relevant subjects.• The book will prove very useful for study and self-practice, and during the precious moments before the exam for quick grasp and reference purpose.• It will also serve as a true test of your studies and preparation for exam with actual exam-style questions and numerous practice-questions given in exhaustive exercises. All questions are solved by respective subject-experts with due diligence.While the specialised study and practice material of this book is published with the sole aim of Assisting you to Achieve Success, your own study and practice in synergy with this will definitely ensure you all Success in the Exam, paving the way for a Bright Career.