B.Sc Maths

Hi Nikita,
The cut-off are very high but minimum eligibility for OBC is 45%. Please read guidelines here:
http://www.du.ac.in/du/index.php?mact=News,cntnt01,detail,0&cntnt01articleid=601&cntnt01returnid=83
https://www.shiksha.com/humanities-social-sciences/articles/du-admissions-2016-faqs-blogId-12783.

So, you have two options either continue it and merge yourself towards field like MBA, B.Sc, etc., or take a drop of one year and do it with science stream and do what you are interested in.

You can go for B.Com in mathematics.

There are many autonomous Institutes which provide elective subjects like foreign languages along with your main subjects such as MS Ramaiah Institute and PES University in Bangalore.

You can pursue B.Sc in maths only when you have science stream in 12th mainly mathematics and minimum of 50-60 % to be eligible for admission in programme. So now you will not be able to pursue as you have commerce in your 12th. Please choose different options for your career perspective.

No, you can't do it because you don't have science stream so I would like to suggest you go for CLAT. It will be different from the subjects or streams which you don't like.

You can pursue M.Sc or integrated Ph.D.

You can go for many master courses like MBA, M.Sc, MS and many more. Make your interest prior.

The admission process is merit based where 60% is the eligibility criteria with maths till 10+2. You have to fill the online form and further details are there.

It's totally based on your 10+2 syllabus.