Sagot :
Actually, all of them are TRUE. Explanation?
1. 2 belongs to A, since 2 is an element to A.
2. {2} belongs to A, since {2} is an element of A.
3. An empty set or {} still belongs to A, because it belongs to one of the subsets of A.
1. 2 belongs to A, since 2 is an element to A.
2. {2} belongs to A, since {2} is an element of A.
3. An empty set or {} still belongs to A, because it belongs to one of the subsets of A.