Anhydrous Copper sulfate is ______ in colour.
Blue
White
Light pink
Brown
Anhydrous Copper sulfate is white in colour.
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