Question 25
In the diagram shown below, colour each of the equilateral triangles with any one of 4 colours: blue, yellow, green or red so that no two triangles will have the same colour. How many different possible ways of colouring the diagram are there? (Two ways of colouring the diagram are considered the same if we can obtain one colouring from another by rotating the entire diagram, reflecting the diagram however counts as a different colouring.)
