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Inspector Morse

You may like to read the article on Morse code before attempting this question. Morse's letter analysis was done over 150 years ago, so might there be a better allocation of symbols today?

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Substitution Cipher

Find the frequency distribution for ordinary English, and use it to help you crack the code.

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Olympic Records

Can you deduce which Olympic athletics events are represented by the graphs?

Reaction Timer

Stage: 3 Challenge Level: Challenge Level:1
Present your plans to someone else before you start any data gathering, and request feedback on what is good and what might need improving.