A solid cube of side 6 is first painted pink and then cut into smaller cubes of side 2. How many of the smaller cubes have paint on exactly 2 sides?
Answer with illustrations will be helpful for me. Thanks in advance.
Hint: Think of a Rubik's cube (image source)
(just imagine that the center is also a cube, not a turning mechanism like it is in real life).
How many cubes have two stickers?