Exercises
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Four-card problem |
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Huffman coding |
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Bacon number |
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Bifid cipher |
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Panini |
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Quaternions |
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Social distancing |
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Hermit |
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A reflexive rainbow |
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Narrative alphametics |
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Easter egg |
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Lotto |
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Consensus sequence |
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Scrabble's secret message |
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The road to God knows where |
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ESP game |
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Buzz-phrases |
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ASCII standard |
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Euro coins |
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Palermo scale |
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A pattern-breaking pattern |
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Langrenus' cipher |
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One-sided states |
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Immune system |
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Electronic color code |
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Sum of numbers |
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Sestina |
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Cryptograms |
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The Feynman ciphers |
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Phone words |
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