A cube is cut in two equal parts along a plane parallel to one of its faces. One piece is then coloured red on the two larger faces and green on the remaining, while the other is coloured green on two smaller adjacent faces and red on the remaining. Each is then cut into 32 cubes of same size and mixed up.
1. 

How many cubes have only one coloured face each ?

A. 32
B. 8
C. 16
D. 0

2. 

What is the number of cubes with at least one green face each ?

A. 36
B. 32
C. 38
D. 48

3. 

How many cubes have two red and one green face on each ?

A. 0
B. 8
C. 16
D. 4

4. 

How many cubes have no coloured face at all ?

A. 32
B. 8
C. 16
D. None

5. 

How many cubes have each one red and another green ?

A. 0
B. 8
C. 16
D. 24