Discreet Mathematics Questions

Need typed answers please

1. For each of these pairs of sets, determine whether the first is a subset of the second, the second is a subset of the first or neither is a subset of the other. a) The set of airline flights from New York to Bahrain, the set of nonstop airline flights from New York to Bahrain. b) The set of people who speak English, the set of people who speak Chinese. 2. Suppose that A, B and Care sets such that A CB and B CC. Show that A CC. 3. What is the cardinality of each of these sets? a) {a} b) {{a}} c) {a, {a}} d) {a, {a}, {a{a}}} e) Let S be the set of letters in the English alphabet