MATHEMATICS I (MATEMATİK I) - (İNGİLİZCE) Dersi Sets and Numbers soru detayı:

CEVAP:

The empty set is unique.The empty set Ø is a subset of any set. Note that the empty set is a subset of any set A and A is its own subset: Ø ? A, A ? A. . If the set A is not a subset of the set D, this relation is written as A ? D..