Sample papers of previous years can be downloaded from the official website. Below is the link for B.Sc(hons.) Maths sample paper:                           http://bhuonline.in/pdfs/UET_2017/B.Sc.%20Math.pdf                                                                     The Undergraduate Entrance Test (UET) 2019 for B. Sc. Maths is scheduled to be held on 17 May 2019. All the best. Check the official website for updates.