Question

if the blue part of a rgb value were set to 0, how many color choices would you still have available by changing the other components of the rgb value?

Answer 1

If the blue component of an RGB color value were set to 0, then the color would have no blue in it, which means that it would be some shade of red or green, or a combination of the two.

Assuming that the red and green components can take on any value between 0 and 255, then there would be 256 possible values for each of these components. Therefore, there would be a total of 256 * 256 = 65,536 possible color choices available by changing the red and green components of the RGB value, if the blue component is set to 0.