If set A is a subset of set B, that means that all elements in set A are also in set B. In the case of a proper subset, there is the additional specification that the two sets are not equal, i.e., there must be an element in set B that is not also an element of set A.
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You cannot. They are two disjoint subsets of rational numbers.
S is a proper subset of T ifall elements of S are in T andthere is at least one element of T which is not in S.S is an improper subset if the second condition does not apply.
If A is a subset of B, then all elements in set A are also in set B. If it is a proper subset, then there are also elements in B that are not in A.
Two
4/9 is a proper fraction and there is not an improper version.4/9 is a proper fraction and there is not an improper version.4/9 is a proper fraction and there is not an improper version.4/9 is a proper fraction and there is not an improper version.