Exercises
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Rack-a-bones |
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Wrong number |
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Lingo |
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Revolver |
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Letter Boxed |
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Positioning |
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Polybius square |
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Harmonic numbers |
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A broken rule |
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Comparing values |
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Arithmetic progression |
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Scytale |
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Straddling checkerboard |
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Pseudonyms |
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Endless learning |
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Crack the RSA code |
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