Mutually exclusive events?

Events that can't occur at the same time are called mutually exclusive. So, events can't happen simultaneously.

Example of mutually exclusive events:

Rolling a die. You can't get the "one" and the "six" simultaneously; these events can't occur at the same time.

Example of non-mutually exclusive events:

Rolling a die if you want to receive six or even number. Six is an even number too.