Okay, so I need to find the order of the group [tex]GL_2(F_5)[/tex], the group of all invertible 2×2 matrices whose elements are from the field [tex]F_5=\{0,1,2,3,4\}[/tex]. It's a pretty tedious question, but I'm not too confident about my answer. I get a total of 486. Anyone bored enough to help?(adsbygoogle = window.adsbygoogle || []).push({});

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# What's the order of THIS group?

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