This video introduces the notion of congruence modulo n with several examples. In addition, congruence modulo n is shown to be an equivalence relation on the set of integers and the equivalence classes are described.

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I found this website from Harvard’s Physics Department that lists out fairly difficult physics problems. I thought it would be fun to try to solve this without looking up anything and just rely on my own memory, logic, and problem solving. For those who are commenting that I did something wrong, I know. I show…

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For a complete lesson on algebra word problems, go to http://www.MathHelp.com – 1000+ online math lessons featuring a personal math teacher inside every lesson! In this lesson, students learn to solve “number” word problems, such as the following. One number is four times as large as another. The sum of the numbers is 45. Find…

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