Answer:
Step-by-step explanation:
Null set: The null set is a subset of every set. Sets and subsets: Any set contains itself as a subset. This is denoted by A A. Proper Subsets: If A B, and A ≠ B, then A is said to be a proper subset of B and it is denoted by A B
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Answer:
Step-by-step explanation:
Null set: The null set is a subset of every set. Sets and subsets: Any set contains itself as a subset. This is denoted by A A. Proper Subsets: If A B, and A ≠ B, then A is said to be a proper subset of B and it is denoted by A B