Hey aspirant,

It is difficult for you to get admission in Banaras Hindu University for B.Sc maths hons., based on the SC rank you have got.

Last year's cut off by rank for B.Sc Hons. Maths for SC category was 1-521 ( opening rank-closing rank). Although  cut offs vary year to year based on - 1) number of students appearing for entrance exam, 2) number of applicants , 3) difficulty of the exam, 4) last year's cut off trends , etc. , but your chances seem to be less.

Hope this helps,

All the best!