The document discusses different types of probability events: - Sure events have a probability of 1 and will always occur. Impossible events have a probability of 0. - Complementary events cover all possible outcomes such that one event must occur. - Mutually exclusive events cannot occur together, while mutually inclusive events can occur simultaneously. - Exhaustive events together cover all possible outcomes such that one is sure to occur. Equally likely events have outcomes that are equally possible. - An example calculates the probability of randomly selecting a number greater than 13 from numbers 1 to 25. The probability is 12/25.