How do we know to use a binomial distribution here? Based on these three reasons:
Each event is independent. Each tire puncture is independent of any other puncture. The probability of puncture is constant at p = 0.00005 (there are four zeros between the decimal point and the 5).
There are a fixed number of trials. In this case, there are n = 10,000 trials.
There are two outcomes. Either a tire is punctured, or it is not punctured.