Question 22
There are 25 green, 20 brown and 15 orange chameleons in a zoo. Whenever exactly two chameleons of distinct colours meet, both change their colour to the third one. Otherwise, the chameleons do not change their colours. Is it possible that:
a. at some time instant, we have the same number of chameleons of each colour?
b. at some time instant, all chameleons are of the same colour?
a. at some time instant, we have the same number of chameleons of each colour?
b. at some time instant, all chameleons are of the same colour?