Final answer:
To accurately determine the probability of selling three shirts out of five, more information would be required. The question is related to probability theory within mathematics, which often requires statistical models to analyze real-world situations.
Step-by-step explanation:
The question asks for the probability of selling three shirts today out of the five pieces of snitt (presumably shirts) that are sold daily at a shop. To calculate this probability, we would need more information such as the total stock of shirts, buyer behavior patterns, or any limit to the number of shirts a buyer can purchase, which are not provided in the question. However, in mathematics and particularly in probability theory, problems usually assume an equal likelihood of all possible outcomes unless stated otherwise. If we were to make an assumption that the likelihood of selling 0, 1, 2, 3, 4, or 5 shirts is equal because no other information is given, we would have a uniform distribution of outcomes. Under these simplified and somewhat unrealistic conditions, the probability of selling exactly three shirts would be 1 divided by the number of possible outcomes, which is 6 (for selling 0 to 5 shirts).
But in real-world scenarios, such probabilities are influenced by a multitude of factors and would typically require detailed analysis using statistical and probability models such as the Poisson distribution or binomial distribution, depending on the specific context and available data.