Enigma 1451: Odds and evens
15 March 2013
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From New Scientist #2612, 14th July 2007
I have created a sum by adding a three-digit number consisting solely of odd digits to a three-digit number consisting solely of even digits to make a three-digit number in which odd and even digits alternate. The nine digits used are all different. If I tell you any of my three numbers you will be able to deduce with certainty what the other two numbers are.
What are the three numbers of my sum?
Enigma 1721 is also called “Odds and evens”.