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by BRG on April 10, 2016

Sunday Times Teaser 2794 – D-day

by Graham Smithers

I have a number with D digits in which the last but one digit (the 10’s digit) is also D.  While preseving the other digits in order, I then move this last but one digit to the left to become the first digit in a new D digit number.  This turns out to be D times my number.

What is my number?

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