the minimum requirement for all streams in B.A. programme in DU IS 45 % in 12 so all the best

go for it.

Delhi University cut off varies college, category, year and program wise as there is no update regarding 2018 cut off so you are advised to go through the below provided previous year cut off trend -

https://university.careers360.com/articles/du-cutoff

Also, how to calculate best four information is given below -

https://university.careers360.com/articles/delhi-university-admissions-how-calculate-best-of-four-marks

Good Luck!!!