If the probability of event a occurring at least once in four independent repeated tests is 8081, then the probability of event a occurring in one test is 8081______ .

If the probability of event a occurring at least once in four independent repeated tests is 8081, then the probability of event a occurring in one test is 8081______ .

Let the probability of event a in a test be p. according to the probability of independent events, we can know that 1-c04 · (1 − P) 4 = 8081, and the solution is p = 23