Science

Please refer to the link provided below for an exhaustive list of colleges which offer courses in B.Sc in Mumbai. You can use the filters on the web page to navigate to a college of your choice. Additionally, you can also download their brochure which contains details regarding admissions, course eligibility, etc.
https://www.shiksha.com/science/colleges/b-sc-colleges-mumbai-all

To make a career in mathematics after 12th standard, it is required to pass 12th standard with physics, chemistry and mathematics (PCM). Now, the candidate is eligible to pursue maths at the graduate level and for higher studies.
After completing graduation/post graduation in mathematics, there is a wide array of career prospects in mathematics field. There is a demand for mathematics students in fields such as statistics, engineering, physical science, computer science, insurance, economics, astronomy, banking and accountancy. There is also a wide scope of mathematics in teaching and research fields.

Subjects of study:
1) Fundamentals of IT and OS
2) Basics of electronics and Micro Processor
3) PC assembling and troubleshooting
4) Programming in C
5) Communication and soft skills
6) Computer Networks
7) Windows 2003 server administration
8) Linux administration
9) Database administration

Some popular books for competitive exams to prepare for B.Sc entrance exams are as follows:
1) Mathematics for Degree Students for B.Sc.
by Mittal P.K. (Author)
2) Physics for Degree Students B.Sc. First Year
by Arora C.L. (Author), Hemne P.S. (Author)
3) New College Calculus For B.A./B.Sc. (1st Semester)
by M.L. Jain (Author), Dr. J.S. Sikka (Author), Satbir Mehla (Author).

Hi Shristi,
It depends on the college. Some colleges require an entrance while some do not. Please refer to this link:
https://goo.gl/1URc91

It is better that you go for B.Sc in maths. According to your interest and opt for teaching line. It will help you study what you want and later you can opt for the research field. Complete your education from IITs and if you don't get admission in IIT then opt for a reputed private institute.

Hi Rakesh,
Depending on what you want to study exactly, you must prepare and clear entrance exams such as AIIMS MBBS, NEET, BHU PMT, AIPMT, Banaras Hindu University (BHU) Diploma in General Nursing and Midwifery Entrance Test, JNU Combined Biotechnology Entrance Exam and so on. Please refer to this list for college and course options and eligibility:
https://www.shiksha.com/medicine-health-sciences/colleges/colleges-india