Simplify the following expression.
[tex] \large \tt 1. \: 7! \\ \large=\red{\boxed{ \tt{120}}} \\ \\ [/tex]
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[tex]\large \tt 2.\frac{10!}{8!} \\ \\ \large \tt = \frac{3628800}{40320} \\ \\ = \large\red{\boxed{\tt{90}}}[/tex]
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[tex]\large\tt3. \: 3!6! \\ \\ \large\tt = (6) (720) \\ \\ \large = \red{\boxed{\tt{4320}}}[/tex]
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[tex]\large\tt4. \frac{4!}{2!} \\ \\ \large\tt = \frac{24}{2} \\ \\ = \large \red{ \boxed{\tt{12}}}[/tex]
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[tex]\large\tt5.8!2! \\ \\ \large\tt = (40320)(2) \\ \\ \large = \red{\boxed{\tt{80640}}}[/tex]
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[tex]\large\tt6. \: 5! \\ \large = \red{\boxed{\tt{120}}}[/tex]
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[tex]\large\tt7. \: 4! \\ \large = \red{\boxed{\tt{24}}}[/tex]
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[tex]\large\tt8. \: 2!7!\\ = \large\tt(2)(5040) \\ \large = \red{\boxed{\tt{10080}}}[/tex]
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[tex]\large \tt 9. \frac{7!}{2!} \\ \\ \large \tt = \frac{5040}{2} \\ \\ \large = \red{ \boxed{ \tt{2520}}}[/tex]
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[tex] \large \tt 10. \frac{8!}{2!} \\ \\ \large \tt = \frac{40320}{2} \\ \\ \large = \red{ \boxed{ \tt{20160}}}[/tex]
