Question 24
The attached figure is made up of 5 grids as shown in the figure. A colour is filled into
each grid, and two adjacent grids do not share the same colour. If there are in total 4
colours to choose from to fill in the grids, how many ways are there to colour the figure?
each grid, and two adjacent grids do not share the same colour. If there are in total 4
colours to choose from to fill in the grids, how many ways are there to colour the figure?