Science

The eligibility for a course basically depends upon the eligibility criteria of the institute/university that you are applying for, majorly you have to opt for physics in class 12th if you are in the science stream as it is mandatory in most of the schools.
Hope this helps.

You can opt for B.Sc (agriculture).

Hi Niraj, The last year cut off was around 80 percentile. This year, percentile may vary a bit.

Unfortunately, since you have done B.Tech in Instrumentation and control engineering, you do not qualify. You need to be a B.Sc in mathematics and computer education, or any other degree that has math and or computer education. But, you can do it now. So, do it if you really want to get into M.Sc Mathematics, and are passionate about it. Another advantage would be that you will be a double graduate.

If you are not good in mathematics, then there is no problem, but you should improve some topic of mathematics, like integration differentiation, trignomatery. Because, it is very useful in every subject.

Free book is not available online on made easy.