Four different positions of the same dice are shown. Select the number that will be on the face opposite to the one having 5.

Logic: When two dice are shown with two common number, the remaining numbers on both dice will be opposite to each other.

From Dice (I) and (IV), there are two number (1 & 3) common in both dice:

Therefore, 5 is opposite  to 2

Thus, the correct option is (a) 2