Dear aspirant, 

You haven't mentioned your category as it plays an important role so considering you of unreserved category I would like to tell you that the closing rank of DDU was 244 and 266 of KM.

I'm providing you the link in which you will get each and every information regarding the previous year cutoff or opening and closing rank of various top du colleges. Just go through this link and all your doubts will be cleared. 

https://bschool.careers360.com/articles/du-jat-cutoff

GOOD LUCK..!!