Which one is an Operating System? A) Harvard Graphics B) Windows 2000 C) MS-Office D) C++ Related MCQs: What number should come next? 3, 4, 7, 8, 11, 12, …….? The land lying between river Ravi and river Chenab is called? Pakistan became a member of the International Labour Organization (ILO) in? After which incident Sir Syed Ahmed predicted that the gulf between Muslims Hindus would widen with the passage of time?