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Probability Calculator With Steps
The rule used is named first, then applied to your numbers.
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What this probability solver is designed for
- Basic and compound probability
- Permutations and combinations
- Conditional probability and Bayes
- Binomial and normal distributions
How to use it
- 1Describe the experiment and the event.
- 2Read the rule applied.
- 3Follow the arithmetic to the probability.
Probability problems to try
P(two heads in three coin tosses)10 choose 3P(A|B) with P(A∩B)=0.2, P(B)=0.5
Probability solver FAQ
- Does it explain independence?
- Yes — the steps state whether events are treated as independent and why.
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Looking for the formulas instead? Browse the formula reference.