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Page last updated at 09:04 GMT, Wednesday, 30 November 2011

Memorable mnemonics

Do you use any tricks to help you remember things?

Roger Bryan, author of the book It'll Come in Useful One Day, has researched the origins of various mnemonics and has found that, among other things, the rhyme to help us remember how many days are in a month started life as "30 days hath November" rather than "30 days hath September".


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