sir i got 390 marks in ts state board and my doubt is what is the Ipe weightage on jee advanced and if i qualify jee mains with 120marks can i elgible for iit advnced

Dear Student, I will suggest you to please go through the eligibility criteria of jee advanced once. Because your percentage matters not your marks for eligibility in the jee. Also the marks in jee mains doesnot matters but you should be in top 1.5 lakh students for it. Thanks.

Main Score and Board score are taken in the 60:40 ratio.
JEE Advanced:Candidates have to appear for Paper - I of JEE (Main) - 2015. Only top 1,50,000 candidates (including all categories) out of the qualifying candidates in Paper - I of JEE (Main) - 2015 will be eligible to appear for JEE (Advanced) - 2015.