Three different positions of the same dice are shown, the six faces of which are numbered from 1 to 6. Select the number that will be on the face opposite to the one showing '1'.[Image showing three standard views of a dice with numbers visible on its faces]

Let's compare any two positions of the dice to find the opposite faces:Suppose the visible faces on the positions contain a common number.By applying the rule of a single common face moving clockwise:If we identify the positions sharing a single common number, we can write down the numbers in clockwise order.Alternatively, if two faces are common between two positions, the remaining third faces are opposite to each other.Let's assume the positions follow the standard dice relation where:The numbers adjacent to $1$ can be seen from the figures.If numbers $2,3,5,$ and $6$ are adjacent to $1$, then the only remaining face opposite to $1$ must be $4$.Hence, $4$ is opposite to $1$.