sir i decided to cs in iit's or IT BHU which shall i take either 4 year or dual please suggest me fast

Dear sai

If you just want to do job after college then go for 4 year cource and if you want to do M.Tech and higher study after B.Tech then I will suggest you to do Dual degree cource.

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Regards,
Askiitians Experts
Badiuddin