- #1

cbarker1

Gold Member

MHB

- 349

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Dear Everybody,

I don't know where to begin. So Here is the problem:

$\newcommand{\Z}{\mathbb{Z}}$

Prove that if $[a]$ and $

I don't know where to begin. So Here is the problem:

$\newcommand{\Z}{\mathbb{Z}}$

Prove that if $[a]$ and $

**$ are in ${\Z / n\Z}^{\times}$, then $[a] \times****$ is in ${\Z / n\Z}^{\times}$.**

Thanks,

Cbarker1Thanks,

Cbarker1

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