To crack the LEET entrance exam you should start your preparation as earlier as you can do. Try to solve previous year question paper, which will give you an idea of the pattern of examination. following are some tips which will prove helpful to you in cracking the exam:

Make a plan for your study.
Read old questions paper so that you will get the idea about the exam.
Read 10th CBSE board papers it will help you to crack LEET.
Don't waste your time
Mange your time correctly
Use only standard books
Solve as many as previous year and sample question paper
Always be motivated

give me some previous paper of LEET