Practice Question 2 (13.3) - Lecture - 13 - Discrete Mathematics - Vol 1
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Question 2

Practice - Question 2

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Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

Define a predicate for 'x is a stamp collector.'

💡 Hint: Think about what property defines a stamp collector.

Question 2 Easy

What does ∃x I(x) mean?

💡 Hint: Look for what existence means in quantifiers.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What does the predicate I(x) represent?

x is a stamp
x is a stamp collector
x is an African country

💡 Hint: Reflect on the role of I in this context.

Question 2

True or False: The statement ∀y∃x(I(x) ∧ F(x, y)) means for every y, there is a stamp x from country y.

True
False

💡 Hint: Check how universal and existential quantifiers interact.

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Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Prove that for any collection of stamps, described with predicates, if one condition is satisfied then other conditions can also be analyzed.

💡 Hint: Think about how existence can lead to further implications.

Challenge 2 Hard

Devise a counterexample where multiple predicates contradict each other concerning a stamp collection.

💡 Hint: Focus on finding a flaw in application of quantifiers.

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