Build and explore Epipolar Consistency of X-Ray Images
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Maths
Finding the Remainder of \(9^{2018} \mod 7\) - Understanding Modular Patterns
When you first see an expression like
\[ 9^{2018} \mod 7, \]it looks impossible to compute. The number \(9^{2018}\) is unimaginably large — far beyond what any calculator can display.
Fortunately, modular arithmetic has a wonderful property: even enormous powers often fall into small repeating cycles. Once you notice the pattern, the problem becomes surprisingly simple.
This post walks you through the reasoning step by step.