Reasoning
Probability
Calculate the probability of an event.
P(E) = Favourable Outcomes / Total Equally Likely Outcomes
Formula Explanation
For equally likely outcomes, probability is the ratio of favourable outcomes to all possible outcomes.
Variables Explained
P(E) = Probability of event E.
Solved Example
What is the probability of getting an even number on a fair six-sided die?
Favourable outcomes = 3; total outcomes = 6. P(E) = 3/6 = 1/2.