(i)[3]
Five students from the college are selected at random. Find the probability that at least four of them own a car.
(ii)[3]
For a random sample of $n$ students at the college, the chance that at least one student owns a car is greater than 0.995. Find the least possible value of $n$.
(iii)[4]
For a random sample of $160$ students at the college, use a suitable approximate distribution to find the probability that fewer than $50$ of them own a car.