B.Sc

You should be able to get this information from your institute.

There is no hard and fast rule that you have to follow to pursue any particular course after completing B.Sc. in community science. The choice is entirely yours and you should pursue a course which you feel comfortable doing/studying.

If you have your provisional degree certificate or your degree, you could apply to IGNOU or ICFAI for a distance MBA. You should be able to furnish proof of passing your degree, and that should suffice to gain admission in distance MBA.

In majority of Universities Maths in 10+2 stage is mandatory requirement to seek admission in MCA. You can seek admission in few Universities such as IGNOU, Symbosis University etc.

You can replace mathematics by computer science.

Dear Anshul,
When you speak about IIM then definitely it will be a respectful and rewarding career. As far as your package is concerned, I personally believe that you should first complete your graduation. Keep your scorecard excellent in the entire process. It is because your excellent scorecard will keep you ahead of others. The package actually depends on your negotiating capability with the employer at the time of interview. So, first be focused on your studies. I hope this would suffice. All the best and God bless you.

After PGDM from IIM, you will get job and salary of a fresher without any consideration or benefits of B.Sc Nautical Science degree. Your salary may vary between Rs 8 Lakhs to 18 Lakhs depending on your profile, specialization and from IIM you are graduating.