Modular Arithmetic - Mastering AMC 10/12

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In this video, we will cover some modular arithmetic basics including notation, product rule, exponent rule, and some interesting examples.
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For more practice, watch the AMC 10/12 Fundamentals Classes here:

If you need a refresher on the fundamentals, check out:
1. AMC 8 Fundamentals:

2. AMC 8 Advanced:

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Tags:
AMC 10, AMC10, AMC 12, AMC12, AMC 10 Preparation, AMC 10 Crash Course, AMC 10 Concepts, AMC 12 Preparation, AMC 12 Crash Course, AMC 12 Concepts, AMC 10 Review, AMC 12 Review, Number Theory, Primes, Factors Competition math, number of factors, sum of factors, product of factors, AMC 10 number theory, AMC 12 number theory, diophantine equations, divisibility competition math, Area of a Triangle, Similar Triangles, Cyclic Quadrilateral, Power of a point, 3D Geo, Polygons, Coordinate Geometry, Trigonometry, Logarithms, Complex Numbers, Inequalities, Floor and Ceiling Functions, Generating Functions

[oddeyecubing]

this video helped me better use modular arithmetic for competition level problems. thanks

[ericurt]

Thanks for making this video! I understood mod before but had no idea how to apply it.

[stawrstudent]

wait, so shouldnt the answer be 12? where did that extra 1 come from?