Mathematics

factorial

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12 questions

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  • 1. Multiple-choice
    1 minute
    1 pt


     (8!+7!)(8!7!)\frac{\left(8!+7!\right)}{\left(8!-7!\right)}  

     78\frac{7}{8}  

     87\frac{8}{7}  

     97\frac{9}{7}  

     89\frac{8}{9}  

     98\frac{9}{8}  

  • 2. Multiple-choice
    1 minute
    1 pt

     6(6!+5!)7!6!6\cdot\frac{\left(6!+5!\right)}{7!-6!}  

    5

    6

     76\frac{7}{6}  

     88  

     910\frac{9}{10}  

  • 3. Multiple-choice
    2 minutes
    1 pt


     6!x+7!=9!  6!\cdot x+7!=9!\ \   

     x=?x=?  

     482482  

     497497  

     490490  

     501501  

     504504  

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