Consider an experiment in which each of three vehicles taking a particular freeway exit turns left (L) or right (R) at the end of the exit ramp. The eight possible outcomes that comprise the sample space are LLL, RLL, LRL, LLR, LRR, RLR, RRL, and ___. Thus there are simple events, among which are E1 = {LLL} and ET = {LRR}. Some compound events include:
A = { RLL, ___ , LLR} = the event that exactly one of the three vehicles turns right.
B = {LLL, ___, LRL, LLR} = the event that at most one of the vehicles turns right. C = {LLL, ___} = the event that all three vehicles turn in the same direction.

Suppose that when the experiment is performed, the outcome is LLL. Then the simple event E1 has occurred and so also have the events B and C (but not A).