👉 Non-pluses are a type of mathematical expression used in various branches of mathematics, including calculus and probability theory. In these contexts, a non-pluse refers to an outcome that is not possible or desirable for some reason. For example, consider the following set of events: - Event A: A student has a score of exactly 90 on their exam. - Event B: The student does not have a perfect score (i.e., scores between 85 and 100).