no!
20 moves is the maximum number of moves needed to solve a Rubik's Cube. However, those moves are not the same for each scramble, so you actually have to learn how to solve the cube.
The smallest Rubik cube is the 2x2x2 cube and it is by far the easiest
youtube - just search it there - you can find anything on youtube - that's where my friend learned how to solve her cube
I think you mean rubix cube. For a rubix cube, you just use a variation of algorithms.
you solve the corners
you download a program called cube version 1.42
You learn algorithms and practice. When you have practiced for a while then you solve the cube faster maybe in 30 secounds or so.
This skills that someone has to solve a Rubik's cube can be used on any size Rubik's cube, whether it be a 2x2 or a 5x5.
he cant
very fun if you can solve it.
It depends on what information you have and what you require.