This book caters to the long-felt requirement for a standard and up-to-date guide for practically all competitive examinations. This book is designed on the basis of actual papers of examinations like NDA/CDS/CAT/MAT/SSC (Graduate and Metric Level), SCRA, Bank PO, LIC, AAO, CBI, Sub-Inspector of police, and various civil services examinations. Easy to understand explanation; ample solved examples for each topic using short cut method; plenty of exercises with answers after the solved examples; practice test papers after each topic; full length question papers at the end of the book.