Hey.

The cut off for admission in DU for the LLB course for the general category was 226 marks in the fourth list. Considering this you will be required to score atleast more than this range for a  fair chance of admission.

The entrance exam contains total 100 questions for 400 marks.

As far as books are concerned, you can use Universal's guide to LLb or Universal’s Delhi University Law Faculty LL.B. Entrance Test Solved Papers includes the question paper.

For the legal section focus on basic level of Constitution like fundamental rights, directive principles. Be thorough with legal maxims according to previous year papers. You can also use the below given e book for DU LLb

https://law.careers360.com/download/du-llb-ebooks