There were two rounds intially to get into the interviews. first was an aptitude round which comprised of 18 questions from number series and 18 questions from general aptitude skills. Then there was a business communications test which was pretty easy but for the some business model questions. You better go througj RS Aggarwal for aptitude and m4maths for business communications skills. The english test is of 22 questions and has 20 minutes limit.