Probability Calculator
Calculate basic probability and combined events.
Single Event
Probability
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Two Events (Independent)
P(A and B)
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P(A or B)
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Probability Formulas
P(A) = Favorable outcomes / Total outcomes
Combined Events (Independent)
- P(A and B): P(A) × P(B)
- P(A or B): P(A) + P(B) - P(A and B)
Conditional Probability
P(A|B) = P(A and B) / P(B)