Practice Part E: Reflexive And Symmetric Relations (21.4.5) - Lecture -20
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Part E: Reflexive and Symmetric Relations

Practice - Part E: Reflexive and Symmetric Relations

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Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

Define a reflexive relation.

💡 Hint: Think about pairs like (a, a).

Question 2 Easy

Give an example of a symmetric relation.

💡 Hint: Consider relationships that involve mutuality.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What defines a reflexive relation?

All elements relate to each other.
Each element relates to itself.
Only some elements relate.

💡 Hint: Look for (a, a) pairs in the definition.

Question 2

Is the relation 'is taller than' symmetric?

True
False

💡 Hint: Consider examples of height comparisons.

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Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Given a relation on set A = {x, y, z}, determine if the relation is reflexive, symmetric, or both.

💡 Hint: Write down the elements and examine all conditions.

Challenge 2 Hard

Create a relation that is both reflexive and symmetric from a four-element set.

💡 Hint: Start with the basics of reflexivity.

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Reference links

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