Three different positions of the same dice are given. Find the number on the face opposite to the face showing ‘4’.

Logic: The Two Common Face rule in dice states that if two dice are shown with two common faces in the same relative position, then remaining two faces will be opposite to each other.

Remaining  2  are opposite of 4.

So, 2 and 4 are opposite to each other

Thus, the correct option is (b).