Question 25
Some faces of the cube are painted blue or red. Each face receives one colour or is left unpainted. How many different colourings are possible? Colourings are considered identical if the cubes can be rotated or turned over to match.
Practice clarification: at least one face is painted. Rotating or turning over means moving the same physical cube; a mirror reflection alone does not make two colourings identical.
Practice clarification: at least one face is painted. Rotating or turning over means moving the same physical cube; a mirror reflection alone does not make two colourings identical.