Probability Terminologies and Notations

We had several discussions about probability and before we delve deeper on this topic, let us reinforce our knowledge by familiarizing ourselves with the terminologies and notations used.   This is in preparation to more discussions ahead. Aside from probability, we will also learn more about permutations, combinations, statistics and other related fields. The following are the common terms used in probability as well as the notations used in most textbooks.



If a coin is tossed, when the coin comes to rest, it can show a tail or a head, each of which is an outcome.


Each roll of a die or toss of a coin is a trial.


An experiment consists of one or more trials. » Read more