Our video lectures will make you an expert in the area of Mathematics and you will be better ready to face competitive exams like IITJEE Mains and advance. This package contains: An external hard drive which covered 143 hours of 303 video parts with 70 GB size. Supplemented with 389 pages and 15 MB size of e- study material. It covers Mathematics of XI standard CBSE and competitive exams like IIT and IITJEE. Validity: 1 year. Compatible OS: Windows XP/7/8 , License: Single Machine with Windows Operating System.