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Magic Multiplications with Digits
See some patterns generated by arithmetic involving numbers whose digits increase, decrease, or are repeated, or by multiples of some digit. Try to figure out why these curious patterns appear.
Contributed by:
Enrique Zeleny
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A. H. Beiler,
Recreations in the Theory of Numbers: The Queen of Mathematics Entertains
, New York: Dover Publications, 1964.
RELATED LINKS
Multiplication
(
Wolfram
MathWorld
)
PERMANENT CITATION
"
Magic Multiplications with Digits
" from
the Wolfram Demonstrations Project
http://demonstrations.wolfram.com/MagicMultiplicationsWithDigits/
Contributed by:
Enrique Zeleny
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