Probability for Three Events Calculator

This calculator finds the probabilities associated with three events A, B, and C.

Simply enter the probabilities for the three events in the boxes below and then click the “Calculate” button.

Probability of Event A

Probability of Event B

Probability of Event C

P(all events occur) = 0.045000

P(None of the events occur) = 0.210000

P(At least one event occurs) = 0.790000

P(Exactly one event occurs) = 0.475000