Three different positions of the same dice are shown. Find the number on the face opposite the face showing '2'.

Logic: According to the dice rule, if two or three positions of the same dice are given with one common face but in different orientations, then to find the opposite pairs of faces, rotate in the clockwise direction from the common face.

So, now let's consider the first and second positions of the dice.

Thus, the opposite faces are (2$$\iff$$4); (1$$\iff$$3); (5$$\iff$$6)

Therefore, the opposite face of '2' is '4'. So, the correct answer is option (b).