Which of the following is the operating system?
MAC OSX
DOS
Windows 7
all listed
OS X is Apple's operating system that runs on Macintosh computers. DOS is a family of disk operating systems. Windows 7 is a personal computer operating system developed by Microsoft.
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Answers by country
MAC OSX
DOS
Windows 7
all listed
answers
Switzerland
13
Australia
15
the United States
28
the United Kingdom
25
Poland
2094
Germany
94
India
19
Austria
14