To secure Mathematics and Computing at Delhi Technological University (DTU) Delhi by Last Round of Counselling, being a Non Delhite from OBC Category, you will require a JEE Main Rank CRL anywhere around 14-15k. For this your target should be to secure atleast 98.5 Percentile in JEE Main or in terms of Score, 180/300.

For more information about DTU Delhi do follow the link below

https://www.careers360.com/university/delhi-technological-university-delhi