Practice Part A: Symmetric Relations - 21.4.1 | 21. Lecture -20 | Discrete Mathematics - Vol 1
K12 Students

Academics

AI-Powered learning for Grades 8–12, aligned with major Indian and international curricula.

Professionals

Professional Courses

Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.

Games

Interactive Games

Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

Define a symmetric relation.

💡 Hint: What must be true for pairs in symmetric relations?

Question 2

Easy

Give an example of a symmetric relation in everyday life.

💡 Hint: Think of a reciprocal relationship.

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

Which of the following defines a symmetric relation?

  • If (a
  • b) is in R
  • then (b
  • a) must also be in R.
  • If (a
  • b) is in R
  • then (b
  • c) must also be in R.
  • If (a
  • b) is not in R
  • then (b
  • a) must not be in R.

💡 Hint: Think about the mutual involvement of pairs.

Question 2

True or False: A symmetric relation must contain both (a, b) and (b, a) for all elements.

  • True
  • False

💡 Hint: Consider what happens when pairs are not included.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Given a set of n elements, determine the total possible symmetric relations and explain the reasoning.

💡 Hint: Recall how symmetry pairs require mutual inclusion.

Question 2

Consider the set A = {1, 2, 3}. Construct all symmetric relations possible and classify them.

💡 Hint: List all pairs and check if they fulfill the symmetry condition.

Challenge and get performance evaluation