The following diagram depicts various views of a cube. Each faces has some number, where as in cube 4, one face is blank. From the answer choices select the number that should come in the blank space.

On the basis of following pattern in given dices ,
From the four views of the cube it is clear that 4 lies opposite 6.
3 lies opposite 1.
2 lies opposite 5.
Therefore, the number 3 will be in the place of question mark.