This task is about constructing a tree diagram.

Mr Harding is choosing colours for the walls, carpet, and ceiling of the lounge.
Below are the colours he is choosing from.
Walls: Yellow (Y), Green (G), or Pink (P)
Carpets: Blue (B) or Red (R)
Ceiling: White (W) or Cream (C)
Draw a tree diagram below that shows all the possible colour combinations for the walls, carpet, and ceiling Mr Harding is choosing from.