How many faces?

This task is about identifying the number of faces on 3-dimensional shapes.
In the example, there is a dot on each of the 5 faces that you can see, but there are 3 faces on the back and underneath you cannot see.
So, the shape in the example has eight faces (5 + 3) in total.
 
Example: 
 
how-many-faces-example.png                                                         
Number of faces:    ___8___
 

Question 1Change answer

a)  How many faces does this shape have?
how-many-faces-part-a.png
     Number of faces: 

Question 1Change answer

b)  How many faces does this shape have?
how-many-faces-part-b.png
     Number of faces: 

Question 1Change answer

c)  How many faces on this shape?
how-many-faces-part-c.png
     Number of faces: