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Proofs : Denumerable Sets and Cartesian Products

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Need help in determining the following proof exercise.

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Corollary 14.2.4:
If A is a denumerable set then so is A^n for every positive integer n.

Proposition 14.2.3:
If A and B are denumerable sets then so is their Cartesian product , AX B.
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Denumerable Sets and Cartesian Products are investigated. The solution is detailed and well presented.

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Corollary 14.2.4:
If A is a denumerable set then so is A^n for every positive ...

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