hi,

you have not mention which university exam you are preparing for, arihant has following books available for b.sc hons entrance test,

BHU Banaras Hindu University B.Com Entrance Exam

GGSIPU B Com Hons Guide

Jamia Millia Islamia BBS B COM BACA BA hons BA Economics Guide

you also need to study on current affairs, english , numerical aptitudes etc.