Определение collectively exhaustive events в Английский Язык Английский Язык словарь
Events in which their union must cover all the events within the entire sample space
In probability theory, a set of events is collectively exhaustive if at least one of the events must occur. For example, when rolling a six-sided die, the outcomes 1, 2, 3, 4, 5, and 6 are collectively exhaustive, because they encompass the entire range of possible outcomes