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Probability Calculator
Enter favorable and total outcomes to calculate probability, plus combined AND/OR probability with a second event.
How to use this tool
- 1Enter favorable and total outcomes for event A.
- 2Enter the probability of event B.
- 3See P(A), P(A and B), and P(A or B).
Frequently asked questions
Does this assume independent events?+
Yes — the AND/OR calculations assume events A and B are statistically independent.
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