The unit shown below is a pentagon with a mark. Each of the four compositions (A, B, C, D) is created by mirroring four times along the edges. Identify the composition with the correct reflection. 
Shown below is an arrangement of closely stacked spheres. Assume each one to be in contact with its immediate neighbour. What is the total number of points where the spheres touch each other?
Shown on the left is a set of equations. Which option belongs to the same set? 
The words given below are written using a particular font. Identify the digit that does not belong to the same font.
Shown below are three perspective views of a solid object. How many surfaces does the object have? Assume hidden surfaces to be flat.
Which option will replace the question mark? 