What Is the Probability of Red in Roulette?

There is no right or wrong answer to this question since it is a probability, and all probabilities are unknown. However, here is one possible calculation that could help you understand the probability of red in roulette.

Suppose that there are 36 black slots in a row and 36 red slots in a row on a roulette wheel. The probability of any given slot being red is therefore 6/36, or about 18%.

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