Pevlika

Probability Calculator

Combine probabilities of independent events and repeated attempts.

Runs in your browser — nothing is uploaded

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How to use Probability Calculator

  1. Enter the probability of A and B.
  2. Set how many times A is repeated.
  3. Read all the combined probabilities.

Questions

What does “at least once” mean?

The chance the event happens one or more times in n tries: 1 − (1 − p)ⁿ.

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