Practice Group Order - 13.6.2 | 13. Group Theory | Discrete Mathematics - Vol 3
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Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

Define the closure property in your own words.

💡 Hint: Think about adding two integers.

Question 2

Easy

What is the identity element in the group of integers under addition?

💡 Hint: Consider what number you can add to any integer without changing its value.

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Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

Which of the following is NOT a group axiom?

  • Closure
  • Associativity
  • Commutativity
  • Inverse

💡 Hint: Remember that not all operations have to be commutative.

Question 2

True or False: The identity element of a group must be unique.

  • True
  • False

💡 Hint: Consider how identity relates to every other element.

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Challenge Problems

Push your limits with challenges.

Question 1

Given the set of rational numbers excluding zero under multiplication, prove or disprove that it forms a group.

💡 Hint: Establish closure by multiplying two rationals and see if the result is rational.

Question 2

Construct a finite group using a set of elements {0, 1, 2} under addition modulo 3, and verify all group properties.

💡 Hint: Perform addition and standard mod operations for verification.

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