A sample space is the set of all possible outcomes of a random experiment. When you toss a coin, there are only two possible outcomes-heads or tails so the sample space for the coin toss experiment is .
Any subset of possible outcomes for an experiment is known as an event . When an event is a single element of the sample space, it may be called a simple event . and are simple events for the coin toss experiment.
For the rolling of a single die, specify the sample space of the experiment; the event that a number less than results and the event that an even number results.