Practice Extended Euclid’s Algorithm - 9.4 | 9. Lecture – 57: Properties of GCD and Bezout’s Theorem | Discrete Mathematics - Vol 3
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Practice Questions

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Question 1

Easy

What is the GCD of 12 and 15?

💡 Hint: Find the largest integer that divides both numbers.

Question 2

Easy

Can you express the GCD of 8 and 12 as a linear combination?

💡 Hint: Use integer coefficients to represent the combination.

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Interactive Quizzes

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

Question 1

What does Bezout's theorem state?

  • The GCD of two integers can be expressed as a product.
  • The GCD of two integers can be expressed as a linear combination.
  • The GCD is always a prime number.

💡 Hint: Think about how we discussed expressing the GCD.

Question 2

True or False: The coefficients in Bezout's theorem are always positive.

  • True
  • False

💡 Hint: Consider the examples we went through.

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Challenge Problems

Push your limits with challenges.

Question 1

Prove that if a is a multiple of N, then it cannot have a multiplicative inverse modulo N.

💡 Hint: Consider the definition of GCD.

Question 2

Use the Extended Euclidean Algorithm to find the GCD of 101 and 10, and express it using Bezout's coefficients.

💡 Hint: Document each step in the algorithm carefully.

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