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An image has pixels.
? What does an image have?
! Pixels. | An image has pixels.

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An image has a width.
? What does an image have?
! A width. | An image has a width.

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An image has a height.
? What does an image have?
! A height. | An image has a height.

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? How many pixels does an image of size 300*200 have?
! 60000 | An image of size 300*200 has 60000 pixels.
? How many pixels does an image of size 30*20 have?
! 600 | An image of size 30*20 has 600 pixels.