Posted by **Tim** on Sunday, August 24, 2008 at 7:41pm.

Is this correct, or where did I go wrong in my answer.

Give a reason to support: The natural numbers {1,2,3,4,5,...}are not a group under addition.

My reason:

0 is not included in the group since it is not included by identity property it can not be conducted making this group of numbers not a group under addition.

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