Assuming that each dart has probability 0.2 of hitting its target, give the probability distribution

of the number of darts one should throw at the target to get the rst successful hit.

What is the probability distribution of the number of throws required to get two hits?

Give the expectation of each of the above random variables.

Finally what is the probability of at least one hit in n throws, and what is the smallest value of n for which this is greater than 0.9?

Can anyone help me do this question?