Hello,

The University of Delhi, informally known as Delhi University, is a collegiate public central university, located in New Delhi, India.

With 85%( general category ) if you wish to get admission in north campus then it is difficult .But you wil get admission in du either in south campus or an off campus college , top colleges in south campus like venkateshwara , lsr also hve high cut offs.

You have chances for getting a seat in bsc mathematics at delhi university.
But you need to wait till 3rd/4th counselling as the 1st and 2nd cutoff are usually high.
Also you might get a college in south campus as the cut off for north campus is usually higher.

Do have patience and my advise is to take admission in very first list and later you can switch to other college.

For more information click on the link below : https://university.careers360.com/articles/du-cutoff
Hope this helps