JEE Advanced requires a good score from JEE mains and also requires aggregate of 75% from class 12th across 5 subjects including Physics, chemistry, maths.

The syllabus is predefined with various topics having different weightages as mentioned below.

https://engineering.careers360.com/articles/jee-advanced-syllabus

both exams are accepted by different colleges and the paper pattern varies as well, all the information with respect to differences, eleigblty, curriculum shared below:-

https://engineering.careers360.com/articles/how-jee-advanced-different-from-jee-main

This year 2.24 lakh students from JEE main are qualified to sit for JEE advanced 2018.