1. 

   math_celebrity Administrator Staff Member

   10!= 10 x 9 x 8 x 7 x 6!
   
   So we have:
   10 x 9 x 8 x 7 x 6!/6!
   
   6! cancels, so we have:
   10 x 9 x 8 x 7
   5040
   
   

    

   math_celebrity, Dec 18, 2023

   #1
   
   

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