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quanta | Jun 09, 2015 |
| The Nine Schoolgirls Challenge ⌘ http://www.quantamagazine.org/?p=17055 #combinatorics #design_theory #mathematics #multimedia #puzzles | ||
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quanta | Jun 09, 2015 |
| A Design Dilemma Solved, Minus Designs ⌘ http://www.quantamagazine.org/?p=17040 #combinatorics #design_theory #mathematics #puzzles | ||