1) The operating system used in apple computers a) windows b) mac c) unix d) dos 2) Example for free and open source software a) windows b) mac c) linux d) dos 3) What is the android symbol ? a) b) c) d) 4) What is the picture of joystick ? a) b) c) d) 5) What is the hardware device that can be seen inside ? a) mouse b) keyboard c) cpu d) joystick

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