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Moving the first digit of a positive integer to the last
Published online by Cambridge University Press: 01 August 2016
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Arithmetical properties of numbers have been a source of fascination for mathematics students and professionals throughout the ages. In this paper we consider a puzzle of sorts in which we move the first digit of a positive integer A to the last position and establish conditions under which A will be equal to a multiple of the new integer. For instance, if A equals 820512 then A = 4A’where A’ = 205128.
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- Copyright © The Mathematical Association 1999
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