Hello Aspirant,

If you are seeking admission to B.Sc. Hons. in Mathematics Delhi University in session 2020-21 then let me make you clear that the admission for B.Sc. Hons. in Mathematics in DU is taken on the basis of merit list which is made on the basis of percentage secured by the applicants in class 12th. So to get admission in Delhi University you need to get good marks and also note that for preparation of merit list only the "Best four" marks are choose, let  us understand this with an example, suppose you have scored well in four subjects as compared to the fifth subject than the best four marks will be considered but this criteria is applicable for all UG Courses except some like BA Hons. Humanities and Sciences, B.Tech, etc. Now considering the cut-offs for last year(2020), if you are from General category and seeking for admission in any of the college of DU for B.Sc Hons. in Mathematics then you should have your best of four percentage at least 94-95% but if you are from any of the reserved category such as OBC/SC/ST then you should have at least 90% marks for Best four of your result. You can get detailed information about the eligibility criteria of DU for such UG Courses from the link given below :-

https://university.careers360.com/articles/du-eligibility-criteria

I hope this information helps you.

Good Luck!!