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Christmas puzzle #2: A Christmas nonogram
Puzzle #2 in our 2020 Christmas puzzle seriesDear Dirichlet, Issue 07
Pigs, popes and produce are among the topics of discussion in this issue's Dear Dirichlet advice columnOn the cover: Chladni figures of a square drum
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Robert J Low flips one upside down.Top 10 emoji for use in mathematics
We take a look at the top 10 emojis!Puzzles, Issue 02
These puzzles appeared in Issue 02 of the magazine.