Three positions of a cube are shown below. What will come opposite to face containing 'N'?

• P

• Q

• S

• R

D.

R

Shorcut Method:
In '1' and '2' cube;
P is common So start with P and go with clockwise direction in both cubes and write the alphabets in this order
P Q N
P Z R
∴   Faces 'N' and 'R' are opposite to each other.