why do the shaded side is non reflecting and what are the subs†an ces from which the nonreflecting side is painted

Q. A cube is painted on all sides Three adjacent sides are painted red Two of the remaining sides are painted green and one is painted yellow The cube is then cut into eight small cubes How many cubes have no side painted red?

Q. A cube is painted on all sides Three adjacent sides are painted red Two of the remaining sides are painted green and one is painted yellow The cube is then cut onto twenty seven small cubes How many cubes are painted red on two sides?

Q. The sides of a cube are painted in different colours. Black side is opposite to red. White side is between black and red. Green side is adjacent to grey and blue side is adjacent to green. What colour will be on the side opposite to the white side of the cube?