Small problem I need some help with here

This shouldn't be too hard, I just totally forgot how to do this after leaving high school. Hopefully someone nice enough will remind me.

If an event 'y' has a 0.03% chance to occur if you do 'x', what are the chances of 'y' not occurring if you do 'x' n number of times? n is just any natural number.

Thanks in advance I've searched through my high school binders but haven't found anything that helps, though I'm sure I did this in grade 11 or 12.

If the probability that an event occurs is p, then (1-p) is the probability that it does not occur. If repeated trials are independent, then (1-p)^n is the probability that it does not occur in n trials.