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Locks and master keys

Published online by Cambridge University Press:  01 August 2016

Anthony C. Robin
Anthony C. Robin*
Affiliation:
County High School for Girls, Colchester
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Extract

A simple lock contains a bolt and one or more levers which are lifted the correct amount by the appropriate key, thus allowing the bolt to be moved in and out. In addition there are often circular obstructions or “wards” to stop some keys being turned in the lock.

Type
Research Article
Information
The Mathematical Gazette , Volume 72 , Issue 459 , March 1988 , pp. 1 - 7
Copyright
Copyright © Mathematical Association 1988

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