JEE is one of the toughest exams that is conducted in the country.. Out of a pool of almost 2 lakh applicants every year, only 10,000 are selected. In order to successfully ace the exam, you need to have the right strategy and good guidance. The JEE Main is of 3 hours and usually 360 marks. The total marks keep changing, but the time duration remains the same. JEE Advanced has 2 papers over two different sittings of 3 hours each.