i have keen interest in computers. and want cs...but at my probable rank i can get mathematics and computing at iitd...should i prefer it over cs at iit roorkee, bhu & guhawti ...as i live in delhi...people say iit d exposure is unmatched...and what are the chances that i can upgrade to cs(5yr) at iitd

Yes, Mathematics & Computing is a very good branch.. It also includes coding much.. Also, if you have interest in coding.. you may take cs courses as well in your degree... Yes, you should prefer it over iit roorkee.. IIT Delhi is best..Chances are very less to upgrade your branch.. You have to be in top 5 of your branch.. CG>9.8THanks