For the preparation of SSC CGL one should must go through this book . It has covers all the topics in a single piece of book . And also you will get the practice papers too which gives the breif idea for the real examination. Some books only have questions and answers they don’t give any idea about the solutions , but in this book you will will get the three questions , answers , and its solution and also a shortcut trick for many questions. For crack the ssc exam you just hace to solve this book once ( at least) or more ( for practice time ) then you can easily be a part of the officers selected by SSC CGL.