Practice Examples of Symmetric Relations - 17.2.2 | 17. Irreflexive Relation | Discrete Mathematics - Vol 1
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Practice Questions

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Question 1

Easy

Define a symmetric relation.

💡 Hint: Think of how pairs relate to each other.

Question 2

Easy

Is an empty relation symmetric?

💡 Hint: Consider the lack of pairs in the relation.

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 defines a symmetric relation?

  • Only (a
  • b) present
  • (b
  • a) must also be present
  • No pairs required

💡 Hint: Recall the condition for symmetry.

Question 2

True or False: An empty relation is symmetric.

  • True
  • False

💡 Hint: Think about lack of any relationship.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Given the relation R = {(1, 2), (2, 3), (1, 3)}, determine if it is symmetric, and if not, why.

💡 Hint: Look for missing reciprocal pairs.

Question 2

Create a symmetric relation with at least four pairs. Write out its matrix.

💡 Hint: Ensure pairs maintain the symmetry condition while forming the matrix.

Challenge and get performance evaluation