Exercises
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Three test tubes |
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Anthropomorphic emoji |
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Mangarevan counting |
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On the origins of chess |
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Magic words |
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Ink-cognito |
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Belgian numbers |
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Sanger sequencing |
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Card flipping |
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Writing's on the wall |
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Antimagic squares |
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Choosing sides |
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Keith numbers |
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Tic-tac-toe |
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Imperial system |
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Cryptex |
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Beach reading |
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Algebraic theory of French letters |
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Roadmap |
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Mountain climbers |
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