This calculator computes the probability of at least one success based on the probability of success in a given trial and number of trials.

- First, input the probability of success in a single trial.
- Enter the total number of trials.
- Now press the 'Calculate' button.
- Finally, the tool returns the P-value of at least one success with formula and calculation.

The following formula is used to determine the probability of "at least one" success.

P_{(at least one success)} = P_{(failure in a given trial)}^{n}