The conversation between human and AI assistant.
How many 4 digit numbers can be formed using 1, 2, 3 and 4 without repeating a digit?
Wow, I didn't know that. Can you tell me more about roulette?
Roulette is a casino game in which players bet on where a ball will land on a spinning wheel. The wheel consists of red and black numbers 1 through 36, as well as a green 0 and sometimes a green 00. Different bets have different odds and payouts.