how to fill omr new pattern 2020

Srachi, you haven't mentioned the exam you are enquiring about. Neverthless, the filling of OMR sheet is same across all the entrance exams that follow OMR mode. You have to fully darken the circle of the answer you think is correct. Half darkened circles will not be read by the system and so even if you have darkened the circle against the correct answer, if the system doesn't read it, you will not be given marks for that answer. So, no partical darkening. You cannot use any other symbols while filling the OMR. It is only darkening the entire circle.