1. The problem is to understand the probability of selecting a specific letter from the set {C, S, M, B, Q, T}. 2. Probability is calculated as the number of favorable outcomes divided by the total number of possible outcomes. 3. Here, each letter is equally likely to be chosen, so the total number of possible outcomes is 6. 4. The probability of selecting any one specific letter (for example, C) is therefore: $$\frac{1}{6}$$ 5. This means there is a one in six chance of picking any particular letter from the set. 6. This rule applies to each letter individually since all are equally likely.