Two different positions of the same dice are shown having symbols: +, @, O, ∞, €, and β. Find the symbol on the face opposite the face showing 'O' if the non-overlapping symbols on the two views are arranged inversely.

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?