Hey Parvez!

The question pattern of 2 or 3 questions will be repeated. But, not the complete question. Plus, it's an aptitude test, so prepare to face challenges where the pattern won't be similar, you have to think at the moment through various ways to reach to the perfect solution. Still, I would say to go through the previous years question. This will increase the functionality of the mind and you will be able to think in various different ways and increase your chances of clearing CAT exam. Prepare well and ace it. Best wishes!