Question

55/E2 Discrete Mathematics Which of the following statements about sets is true? a. A set is a well-defined unordered collection of objects of b. The cardinality of a set cannot be negative estion c. Ifx e A orx e B then X E AUB d. The empty set is a subset of every set page

Answer 1

Let me discuss this problem part by part--->

a. A set is a well-defined unordered collection of objects. (By definition of set) J. True a b. The cardinality of a set cannot be negative True ( simply, the cardinality in the no. of elements in a set which is alwas greater or equals to 'ö') xt AOB or XEB, then c. uf, XEA True XEA or HEB, then, at AUB as AUB contains all elements in A and B and A or B both. d. the empty set is a subset of every sel. True (By definition, it is true)