Which one is the same as Yellow, Orange and Green?
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
Some plants have a unique photosynthetic pigment. The leaves of these plants appear to be yellow and orange. Which pigment makes this leaves appear yellow and orange?