The three colours used in traffic light are Red,Blue and Brown.
The elements of sets A , B and C are all colours as follows:
A = { Red , Orange , Yellow , Brown } ,
B = { Blue , Yellow , Green , Brown } ,
C = { Black , Brown , White , Grey }
Then, A U B U C is
The six faces of a cube are coloured black, brown, green, red, white and blue.
(i) Red is opposite to black
(ii) Green is between red and black
(iii) Blue is adjacent to white
(iv) Brown is adjacent to blue
(v) Red is at the bottom
The four adjacent colours are