B.Tech Maths

Open this link and you will get your answer
https://www.bml.edu.in/courses/b-tech/b-tech-computer-science-engineering/syllabus/

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Yes, you can take admission for B.Tech without maths paper, but for you B.Tech options are : Biotechnology engineering, biomedical engineering, bioinformatic engineering etc. Only in courses related to Biology. Math is a compulsory in B.Tech. Eligibility Criteria of B.Tech - Pass with 60% marks in 10+2 (with Physics, Mathematics and English) or JEE (Main)
So, you cannot imagine the B.Tech without mathematics. In B.Tech we have to study three maths on different semester. Good Luck .

Your qualifications are good. You can get job in both Technical field (engineering stream) and Teaching field and pharmaceutical also. Identify your interest and go & achieve.

Yes, maths and physics are there in B.Tech IT, but not in all of the universities. It depends on university choice. It's good to have a basic knowledge on these subjects. All the best!

There is no course known as B.Tech in CSE with maths. B.Tech in CSE is the only course available.