1. The problem statement, all variables and given/known data Are all disjoint events also mutually exclusive? And if events are independant does this also mean that they cannot be disjoint? 2. Relevant equations no relevant equations 3. The attempt at a solution In probability disjoint events are events that have no intersection. If the events have no intersection I would think that they would have to be mutually exclusive and could not be independant either because there is no way for them to both occur at the same time.