There is a popular myth in roulette about hot and cold numbers. Supposedly, hot numbers are numbers that appear often in roulette, and cold numbers are the opposite. Many bettors often try to find the most common numbers in roulette and make their bets based on this information.The reason why this doesn’t work is because most of the common numbers in roulette is based on an unbiased simulation. In casinos, roulette is adjusted to its own simulation. Therefore, it’s impossible to replicate similar results.