Let's evaluate each statement:
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False - Resolution is typically reported as the total number of pixels in width and height (e.g., 1920 x 1080), where horizontal pixels are multiplied by vertical pixels, rather than simply the number of horizontal pixels in a line times the number of lines.
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True - A widescreen monitor commonly has an aspect ratio of 16:9 or greater, with 16:9 being a standard widescreen format.
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False - A 20" monitor refers to the diagonal measurement of the screen, not the horizontal width. The actual width depends on the aspect ratio.
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False - A 23" monitor with an aspect ratio of 4:3 will have a different width compared to a 23" monitor with an aspect ratio of 16:9 due to the difference in height and width ratios.
So, in summary:
- False
- True
- False
- False