Practice - Special Sets
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Practice Questions
Test your understanding with targeted questions
What is the empty set?
💡 Hint: Think of a bag with nothing inside.
Give an example of a singleton set.
💡 Hint: A set with just one item can be a singleton.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What does the symbol ϕ represent?
💡 Hint: Recall what an empty set indicates.
True or False: The empty set is equal to {ϕ}.
💡 Hint: Think about the elements each set contains.
1 more question available
Challenge Problems
Push your limits with advanced challenges
Prove that the empty set is a subset of any set A, using logic and definitions.
💡 Hint: Think about how subset definitions work.
Create examples of sets A, B, C such that A is a proper subset of B, and both sets include a singleton set.
💡 Hint: What makes one a proper subset.
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Reference links
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