Teacher2Teacher 
Q&A #1474 
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From: Roger To: Teacher2Teacher Public Discussion Date: 2007031512:38:14 Subject: Re: Zero as an even number In order to define zero as even or odd, first determine the universal set. If the set of whole numbers is the universal set, then simply define an even number as an element of the set { x : x = 2n, n an element of the set of whole numbers } and define an odd number as an element of the set { x : x = 2n + 1, n an element of the set of whole numbers }
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