Main Page | See live article | Alphabetical index Events E1, E2, ... , En are said to be mutually exclusive if the occurrence of any one them automatically implies the non-occurrence of the remaining n-1 events. In other words, two mutually exclusive events cannot both occur. Examples A flipped coin coming up heads and the same coin coming up tails are mutually exclusive events. A student passing a test and failing it are mutually exclusive (though someone can fail a test, retake it, and then pass). See also: excluded middle. This article is a stub. You can help Wikipedia by fixing it. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.