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Zoo of Numbers: Numbers 7 to 12  
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Books by the same authors of Archimedes Lab Project
Eye bogglers
EYE BOGGLERS, ISBN 1780970749
Curiopticals
CURIOPTICALS, ISBN 1847322298
3D Optical Illusions
3D ILLUSIONS, ISBN 1780970056
World of Optical Illusions
WORLD OF ILLUSIONS, ISBN 1848586647
Drawing Optical Illusions
DRAWING OPTICAL ILLUSIONS, ISBN 1848378203
Optical Puzzles
OPTICAL PUZZLES, ISBN 1848589395
Amazing Visual Illusions
AMAZING ILLUSIONS, ISBN 1848378300
Prestidi-Geometrie
PLIAGES, DECOUPAGES, MAGIE, ISBN 2848841656
Etrange Univers des Illusions d'Optique
L'UNIVERS DES ILLUSIONS, ISBN 2215110120
MateMagica
MATEMAGICA, ISBN 1780970056
FantaLogica
FANTALOGICA, ISBN 1780970056
Buy our books to help support our website!

 

Number 7
Live with your lucky number 7


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What's Special About This Number?

Fun facts on numbers (and their peculiar properties), both mathematical and cultural, tantalising problems and anecdotes. The number facts in this website are also available as features for print and electronic publishing.

A free 197-page eBook containing a huge collection of number facts is available for you to download.

If you got a distinctive fact about any number listed here you think Archimedes' Lab community might enjoy, why not post it here? italiano Conoscete un numero con delle proprietà originali? Contattateci!
francais Connaissez-vous un nombre avec des propriétés étonnantes? Contactez-nous!

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Encyclopedia of Numbers © G. Sarcone, Archimedes Lab, Genoa, Italy

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