I have a decent preparation for IIT JEE. I m filling the loopholes right now. Formulae are on my tips. I m weak in certain topics like SHM, virtual work, p-block elements & complex numbers. What should I do in this last month to get a sure shot success in JEE? I want to get a rank in top 200. Can u please tell me how much marks must I score for AIR 200 and even for AIR < 1000? Since IIT-K is making the paper this time, can we have some prediction about the difficulty level of each subject viz. physics, maths & chem in the exam?