Entrance Exams are not pass/fail exams. They are rank exams. So whether the paper is tough or easy is not that important.

Advantages of Tough Questions

• There will be less clustering of ranks and hence you will not miss the bus by one mistake. If it is a easy paper, you will go back by 150 ranks per mistake (for ranks 100 to 3000)

Disadvantage of Tough Questions

• Your brain has been tuned to get an instant depression when you see a question for which you don’t know the answer. (this is due to the faulty school system in india) hence you are likely to make mistakes in other easy questions