hi,

banaras Hindu university conducts UET exam to admission in different undergraduate courses , however the old papers are available in bhu website given in the below link,

http://bhuonline.in/old-qus-paper-entr.html

generally students need to solve the previous years papers to excel in upcoming entrance test. however bhu b.sc math group solution books is available by arihant experts, which you may purchase to get the solutions.