Probability Calculator
Single Event Probability
P(Event) = Number of favorable outcomes / Total number of outcomes
Combinations Calculator
C(n, r) = n! / (r! × (n-r)!)
Permutations Calculator
P(n, r) = n! / (n-r)!
About Probability
- Probability: A number between 0 and 1 representing the likelihood of an event (0 = impossible, 1 = certain)
- Combinations: Number of ways to choose r items from n items where order doesn't matter
- Permutations: Number of ways to arrange r items from n items where order matters