kinkindly answer all parts coz they link to each other

(b) Let X" and Y be finite sets. For each of the following, give the answer and a brief explanation. (i) What is the cardinality of the cartesian product X x Y? [2 marks] (ii) How many relations are there on X? [2 marks] (iii) What is the cardinality of the powerset P(X)? [2 marks] (c) Give examples of surjective functions N - Z and N - N x N. [5 marks]