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Practice Problems
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1
What symbol represents the empty set?
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Answer ∅
2
What type of set is the set of natural numbers?
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Answer Infinite set
3
If A = {1,2} and B = {1,2,3,4}, is A a subset of B?
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Answer Yes (A ⊆ B)
4
When is A a subset of B?
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Answer When every member of A is also in B