Two positions of the same cubical block (dice) are shown. If the face with number '6' is at the top, which number will be on the face at the bottom? (Position 1 shows faces 1, 2, 6; Position 2 shows faces 1, 5, 2)

Three positions of the same dice are shown: Position 1 shows (1, 2, 3), Position 2 shows (1, 3, 5), and Position 3 shows (1, 5, 6). Select the number that will be on the face opposite to the face showing '4'.

Two positions of the same dice are given. Which number face is opposite to the face with 6?