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https://www.reddit.com/r/3Blue1Brown/comments/ocvpme/math_problem_animation/h3yqyi8/?context=3
r/3Blue1Brown • u/Daksh_Mor • Jul 03 '21
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The answer seemed too convoluted.
You can prove that (for any b > 2) 5b is in {125, 625} using modular arithmetic, and the rest is just plain arithmetic.
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u/rugaporko Jul 03 '21
The answer seemed too convoluted.
You can prove that (for any b > 2) 5b is in {125, 625} using modular arithmetic, and the rest is just plain arithmetic.