Discrete Math: Congruences

Learn about congruences and their relevance to cryptography.
Continue your Discrete Math learning journey with Discrete Math: Congruences. Learn the definition of congruences, the properties they contain, and the procedures for solving them. Learn about the Chinese Remainder Theorem and how you can apply it to systems of congruences. Use Python to code a Caesar cipher, one of the simplest use cases for congruences.



### Skills you’ll gain
- Use congruence properties
- Solve linear congruences
- Make a Caesar cipher in Python

### Notes on Prerequisites
We recommend that you complete [Discrete Math: Sets and Set Operations](https://www.codecademy.com/learn/discrete-math-sets-and-set-operations) before completing this course.

• Congruences: Learn about congruences.
• Lesson: Congruences: Lesson
• Article: Congruences: The Chinese Remainder Theorem
• Quiz: Congruences: Quiz
• Article: Congruences: Problem Set
• Informational: Next Steps