Here's another question I'm lost on:(adsbygoogle = window.adsbygoogle || []).push({});

"Show that the permutation [itex]\psi [/itex] contained in [itex]S_{10}[/itex] of order 20 is odd"

I know that the order of the permutation is the least positive integer n such that [itex]\psi^n [/itex] is the identity permutation.

I don't know how to check whether the permutation is odd. Even if I did, I still doubt I'd know what to do from there on using the information I've got.

Thanks again.

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# Homework Help: Another Group theory Q

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