since no one tried to answer my question. " what is the call the pictures of 3 " in roulette.
If you look at the 3 and go two numbers down in the same colon you will see the 12
12 is also red and if you add 1,2 you get 3. Two down there is 21.Also red and added up makes 3 again and the same goes for 30.
You can do this with the numbers 3 to 9 and they will all work.
just one example of how roulette is a game that wasn't invented overnight.