General Studies · Cube and Dice

Three different positions of the same dice are shown. The numbers on the faces of the dice are 1, 2, 3, 4, 5, and 6. In the first position, the visible faces show 1, 2, and 3. In the second position, the visible faces show 1, 3, and 4. In the third position, the visible faces show 1, 2, and 4. Find the number on the face opposite to the face having '6'.