Dear Shishpal as per the last year cutoff of DU for Bsc Maths Hons is 88 in all six cutoff list. So sorry to say its tend to impossible in 79% because of its very low percentage as per the DU cutoff list of all the rounds. I suggest you explore another option too.
All the best
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile