Mathematical feature in all Sudoku puzzles

January 25, 2024

Infographics / math, Numberphile, Sudoku

For Numberphile, Simon Anthony explains the Phistomephel Ring. The shape always contains the same numbers as the corners do. Math magic!

Here are the mothers and fathers who work like you.

Salaries vary across occupations. Here are some charts that show by how much for 800 of them.

Someone mentioned that $400,000+ per year was commonplace in American households. That seemed like an odd comment.

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