The book is specially written for PGT Commerce examinations like KVS, NVS, DSSSB, HTET Level III UP PGT & All other state level teaching examinations. The book is an attempt to clarify the theoretical concept and provide practical problem solving aptitude to crack the objective type examinations. This book also contains a scanner of questions asked in previous exams. Besides this, there is a chapter-wise segregation of the exam questions.