can u explain a and b seperately i will upvote it

could u start from the option b pls .

4) (15 pts) Hashing Suppose n keys are chosen randomly and the hash function distributes the keys uniformly at random over {0, 1, ..., m-1). a. (5 pts) What is the probability that n=2 independently chosen keys have the same hash value i.e. what is the probability there is a collision among those two keys? b. (1.0 pts) What is the probability that there are no collisions among any of the n keys? Assume n