Tuesday
July 7, 2015

Homework Help: Math

Posted by Kassie on Monday, February 1, 2010 at 8:07am.

Let N= {1,2,3,...}, that is, N is the set of natural numbers. Find a proper subset X of N such that there is not a one-to-one correspondence between X and N. Find a proper subset Y of N such that there is a one-to-one correspondence between Y and N.

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