This book is desined for jee(Main/Adv.) for entry in IIT'S/NIT'S.This book is based upon the current and expected pattern of JEE Advance.This is also useful for MCA Entrance.Approximately 2200-2500 conceptual problems are entered.There are only selected examples are entered for sake of knowledge.In each chapter important formulae and a lots of tricks are listed which will consume your time while solving your problems.There are four steps in each chapter Check your skills,Level-1,Level-2,LEVEL-3(objective,subjective and comprehensions type) which are advantegeous for your continuous climb on concepts.