sir what marks and what rankk is requíred to get an seat in top iit colleges like iit delhi.

@ pratyasha 
it purely depend upon the branch that u are intrested in . 
as iit delhi selects the students on the besis of jee advanced ranking , 
and jee advanced changed everytime the paper pattern in terms of marks . so, we cannot specify the marks here , 
just , u need to score 40 – 55 percent of the total marks of the paper , 
only then u can get a seat in iit delhi branch . 
but , if u want comp sci , then the demand will be quite high . 
HOPE IT CLEARS ..

HI PRATYASHA,

we cant predict the marks as the total marks of jee-advanced exam changes every year but yes you can think about the  rank. but also it will depend on whicht branch you want!

Try to score about 50% of total marks!

for decent branch your rank should be about AIR-500

however for computer science and engineering you will need rank around AIR-100 for IIT Delhi.

I hope will get it :)