Hello Balwan. You can easily get admission in mdu in rohtak for Bsc Mathematics Hons since your percentage is quite good and the cut off required there is 50% More information about the course and college is provided in the link below.

https://www.shiksha.com/science/course/integrated-b-sc-hons-m-sc-hons-in-mathematics-maharshi-dayanand-university-rohtak-270937