When someone tells you the probability of something happening they are telling you how likely that something is. N S is the total number of events in the sample space. The following list of mathematical symbols by subject features a selection of the most common symbols used in modern mathematical notation within formulas grouped by mathematical topic.
Analysis and approaches formula booklet 10.
Get help on the web or with our math app. The probability of something not happening is 1 minus the probability that it will happen. Formula to Calculate Probability. Explore what probability means and why its useful.