When you are not sure of the answer, Should you take the risk of answering these questions because there is negative marking in Exam?
My advise is there, If negative marking is there & question is completely unknown to you, Please leave that question & move to another question. Don’t go with the probability to answer that question if you are not sure about.
Prof. UMA Sankar Manchella
(All India IIT Coordinator And Senior Maths Lecturer, Sri Chaitanya Educational Institutions)