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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define cardinality in your own words.
💡 Hint: Think of the term as a way to measure the size.
Question 2
Easy
What is an injective mapping?
💡 Hint: Focus on how elements correspond to one another.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What does cardinality measure?
- The shape of a set
- The size of a set
- The color of a set
💡 Hint: Think about what it means to compare sizes.
Question 2
True or False: Every countable set is finite.
- True
- False
💡 Hint: Remember the examples discussed for infinite sets.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Given a set of all real numbers, can you extract a countably infinite subset?
💡 Hint: Think about the properties of rational numbers!
Question 2
Create an example showing the union of any infinite countable sets.
💡 Hint: Look at how lists can overlap without losing countability.
Challenge and get performance evaluation