JEE

Admission:
Candidates qualifying in the JEE Advanced are eligible to admission in the 23 IITs if they satisfy any one of the following criteria. They should score a minimum of 75% in the class XII board examination.

Well, you can get admission through some other examination basis like COMEDK, IPU, MMMUT, other state entrance examination. JEE is the examination through which most of the colleges take admission, but nevertheless you can go for BITSAT as well if you gave the entrance exam. If not, try out University examination and some other courses also. It will be beneficial for you. All the best.

You can compare your rank with previous year's category wise cutoff's ranks of NITs at:-
https://josaa.nic.in/josaaorcrarchieve/Result/OpeningClosingRankArchieveN.aspx?Year=2017.
Check for the Home State NIT first. Also this year's round 1 counselling ranks at: https://josaa.nic.in/webinfocms/Public/View.aspx?page=71.
Best of luck.

JEE Mains (paper 2) marks are valid for getting admissions only in national institute of technology B.Arch courses. So, this exam is not valid for Andhra university.

One should score above 180 or 200 in JEE mains to get MNNIT.

Kindly visit this link:
https://www.google.co.in/url?sa=t&source=web&rct=j&url=https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor&ved=2ahUKEwjAu47I1_3bAhWHsY8KHZKxCSQQFjAAegQIARAB&usg=AOvVaw1N9BzFtyUCP4JU-2UQHQ0H

Here, at this college, you get admission based on who apply and appear for counselling but you need to qualify JEE Mains as in OC category cut-off marks, so as to accept your application. And for scholarship, if you are in the top 12 of a branch (for the first year, you have join the top 12 which are shortlisted based on JEE score, the following years will be shortlisted based your CGPA of previous year), who have joined, then you can get 1-1.5 lakhs scholarship per year.

This is a private college. So, no need to worry about category, and also in this college, they accept applications who are qualified in JEE Mains (i.e. he/she should qualify according to OC category cut-off) as per the year, as of this year is around 74. So, if you cross this year cut-off, you may get a seat and if you are above 120, you will get CSE for sure. And, I can't guarantee because it's based on the people who apply and you need to qualify JEE Mains to apply.

Please follow Arihant. This book is named as RD Sharma objective for IIT-JEE mathematics.