Hello studnet. It is really good and it gives a wonderful practice that you solving the past 17 years papers. But just one thing. Arihant or any other reference papers or books donot give any guarentee that the bits would be same with same values from their books.

Yes, there is a chance that 10 percent of the paper might have bits from the most referred books or standard books. But all the bits.. no chance. Kindly use them for practice alone.