Define Probability and How do you find the Probability of an Event Words 'chance' probably, or most probably etc. shows uncertainty in our statements. The uncertainity of 'probably' etc. can be measured numerically by means of 'probability'. Trial and Event : An experiment is called a trial if it results in anyone of the possible outcomes and all the possible outcomes … [Read more...] about Define Probability and How do you find the Probability of an Event