Probability of event A and B. Probability of an event of ways it can happen total number of outcomes P A of ways A can happen Total number of outcomes Example 1. Formula for calculating the probability of certain outcomes for an event.
The probability of the second event is 419.
The probability is 520 x 419 x 1118 441368 0032. Using our formula for probability we get a probability of 16. And the probability of the third event is 1118. Probability is the branch of mathematics concerning numerical descriptions of how likely an event is to occur or how likely it is that a proposition is true.