The thoroughly revised & updated 4th edition of the book “Koncepts of LR - Logical Reasoning for CAT & Other MBA Exams” is a one stop solution for mastering Concepts and Problem Solving for CAT. The book is the result of an extensive analysis of the past year exams papers. It now incorporates CAT questions from the past 23 years and 10 years of IIFT, & XAT questions. The book also includes Critical Reasoning. The books major focus is on Problem Solving Caselets and it provides numerous examples, past questions and practice caselets. The entire book has been divided into 21 chapters which provide conceptual inputs along with Solved Examples followed by Exercises in 5 difficulty levels viz. Concept Applicator, Concept Builder, Concept Cracker, Concept Deviator and Data Sufficiency, with detailed solutions. The Author has taken the onus of formulating questions on his own with his expertise in the domain. The result being, more than 2000+ questions incorporated in the book with detailed solution, a feature not available anywhere otherwise. This book serves the purpose for all the aptitude test takers looking to crack exams like CAT, XAT, SNAP, IIFT & other MBA exams.