Item 7.7.3.2.
This is a geometric distribution with p=4/5. P(X > 4) = 1 - F(4) = \((1 - 4/5)^4 = \frac{1}{625}\) which is very small. Note, in this case you would have needed to receive the same title randomly for all of the first four kids meal purchases. If this were to ever happen, please let the people at the counter know and it will be their pleasure to swap out for a new title.in-context