The sixth, comprehensive revised edition of ‘Test of Reasoning for All Competitive Examinations’ comes at a time when the importance of Test of Reasoning is increasing in various competitive examinations including the UPSC Civil Services & State PSCs. However, with varying levels of difficulty in questions, an aspirant must be equipped with an understanding of a wide range of topics and question levels. The revision has therefore been done to bring in this ease of use for all students. The theory portion has been enhanced and enriched and a lot of new problems have been incorporated according to the new pattern of current competitive examinations. It presents concepts in a lucid and unambiguous manner.