I have been using gate previous year made easy mechanical contain 32 year solved question and its a great product I have been ever seen the way it explains problem we will love it . It has arranged all the problems chaptewise that a great help for students and I strongly recommend you to purchase this one who are preparing for gate . Price are also too good the hard work made while preparing this book this price is valuable and good . It also have 2 methods for solving problem if its possible to slove by 2 .