Colour the following on the picture above: a. One quarter of the red window, b. Two quarters of the purple window, c. Two quarters of the orange window.

The house has four windows, each divided into 4 panes.

• The top-left window is red.
• The top-right window is purple.
• The bottom-left window is orange.
• The bottom-right window is green.

a) Colour one quarter of the red window.
This means 1 out of the 4 panes of the red window should be coloured.
Fraction to colour: $\boxed{\frac{1}{4}}$

b) Colour two quarters of the purple window.
This means 2 out of the 4 panes of the purple window should be coloured.
Fraction to colour: $\boxed{\frac{2}{4}}$

c) Colour three quarters of the orange window.
This means 3 out of the 4 panes of the orange window should be coloured.
Fraction to colour: $\boxed{\frac{3}{4}}$

d) Colour the green window.
Since no specific fraction is given, and the instruction is simply "Green", it implies colouring the entire green window.
Fraction to colour: $\boxed{\frac{4}{4}}$

Now, let's address Question 2, which refers to the train. My previous answer for Question 2 stated it couldn't be answered without this picture, but now we have it!

a) How many passenger carriages does the train have?
Counting the carriages behind the engine: there is one yellow, one orange, and one red carriage.
The train has $\boxed{\text{3}}$ passenger carriages.

b) What fraction is yellow? Orange? Red?
There are 3 passenger carriages in total.
Yellow: $\boxed{\frac{1}{3}}$
Orange: $\boxed{\frac{1}{3}}$
Red: $\boxed{\frac{1}{3}}$

c) The wheels are divided into ____ parts. Write one part as a fraction.
Each wheel on the train is divided into 6 parts (spokes).
The wheels are divided into $\boxed{\text{6}}$ parts.
One part as a fraction: $\boxed{\frac{1}{6}}$

d) Each passenger carriage has ____ windows. Write one window as a fraction.
Each of the yellow, orange, and red passenger carriages has 6 windows.
Each passenger carriage has $\boxed{\text{6}}$ windows.
One window as a fraction: $\boxed{\frac{1}{6}}$

e) Colour in two sixths of the yellow carriage windows, four sixths of the orange carriage windows, five sixths of the red carriage windows.
This is an instruction to colour the specified fractions of windows.
Yellow carriage: Colour $\boxed{\frac{2}{6}}$ of the windows.
Orange carriage: Colour $\boxed{\frac{4}{6}}$ of the windows.
Red carriage: Colour $\boxed{\frac{5}{6}}$ of the windows.