So, following:

Chance of event occurring is 2% (aka a 50 sided die rolling a natural 1). How to calculate the probability of the event occurring once after multiple attempts? So let's say I roll 10d50, meaning it's 10 times a 2% chance. The only thing I remember from school is that it's not 20%, since that would lead to 100% at 50d50, which in term is Gambler's Fallacy and not actual math XD

Thanks for the help in advance.