The follwing the criterion of eligiblity for the BITSAT 2008 .. see if u match this
The candidate should have obtained a minimum of aggregate 80% marks in Physics, Chemistry and Mathematics subjects (if he/she has taken Mathematics in BITSAT) or a minimum of aggregate 80% marks in Physics, Chemistry and Biology subjects (if he/she has taken Biology in BITSAT) subjects in 12th examination, with at least 60% marks in each of the Physics, Chemistry, and Mathematics / Biology subjects.
ya u gotta get exact 80% or above to get in bits..but u have mentioned only ur overall aggregate......u may be having more than 80% in PCM.....and 60 each in P,C AND M..........