The 4th edition of the book 20 Practice Sets for JET Data Entry Operator exam past 5 year papers, Practice Sets for the JET Data Entry Operator Exam out of which 15 tests are in the book and 5 tests have been provided online so as to provide the online experience to the students. The book also provides the 2018 exam Solved Paper. Each test contains all the 3 sections Reasoning Ability, numerical Ability and English Language as per the latest pattern. The solution to each test is provided at the end of the book. This book will really help the students in developing the required Speed and Strike Rate, which will increase their final score in the exam.