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2007 iTest Problems/Problem TB1: Revision history

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2 January 2020

14 May 2009

  • curprev 09:0009:00, 14 May 2009 1=2 talk contribs 797 bytes +797 New page: == Problem == The sum of the digits of an integer is equal to the sum of the digits of three times that integer. Prove that the integer is a multiple of 9. == Solution == A number <ma...
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