SAM_0006.JPG
The ratio of the number of black squares to the total number of squares is 1:2.
The number of white squares is 1/2 of the total number of squares.

SAM_0002.JPG
The ratio of the number of blue pillar to the number of yellow pillar is 1:1.
The ratio of the number of red pillar to the total number of pillars is 1:2