I have math homework gambling problem. Im suppose to find a players expected number of winning tickets by usuing bournouli trials probability of usccess and probability of failure

Bernoulli random variable:
It is a variable that has 2 possible outcomes. success or failure.
Success occurs with probability p and failure with probability
1 − p.

poisson distibution;

The Poisson probability function with parameter λ > 0
(where λ is the average number of events occur per time, area,
volume, etc. is:
P(X = x) = λ
x
e
−λ
x!
, x = 0, 1, 2, · · ·