Probability Calculator

Basic Probability Calculation

Number of Favorable Outcomes Total Number of Outcomes

Result will appear here.

Note: Calculates P(E) = favorable outcomes / total outcomes.

Probability of A (P(A)) [0-1] Probability of B (P(B)) [0-1] Probability of A and B (P(A ∩ B)) [0-1] (optional for union/cond)

Result will appear here.

Note: For union and conditional, P(A ∩ B) is required. For checks, enter values to verify.