As much as we would like to, we cannot have a clear idea as to what the cutoff for higher degree exam would be. The reason is that bits has no set rules for cutoff. It depends on several factors like how many students are applying for the exam, what is the difficulty level of the exam. To add to the confusion, bits has increased the intake of higher degree students (M.tech and M.Pharm) by 55% in 2018. Also they would be accepting GATE scores for admission in the same. So it is really difficult to predict where the cutoffs are set.
All the best!