Memory Based Questions Collected from various Students. Number Series Solution Discuss in Video if You have any Doubts Discuss Via Comment Box. Well, firstly, the paper is being conducted in four shifts i. 1, shift2, shift 3 and lastly, shift 4. All the shifts shall have different questions and sets shall be different. None of the questions in the shifts shall be repeated. The candidates will have to study well and give the answers properly.