Answer:
A function with out parameters cannot take any arguments or perform operations on variables passed in. A function with parameters can.
Answer:
Each pixel of light coming from your computer is made up of a combination of Red, Blue and Green light of different intensities. As this pixel of light is so small your eye only "sees" the combination of those 3 pixels as the intended colour. (as opposed to just red, green and blue light) (This is also known as additive colour mixing)
Explanation:
Once a spreadsheet has a data set stored within its cells, you can process the data. Excel cells can contain functions, formulas and references to other cells that allow you to glean insights in existing data sets, for example by performing calculations on them.
