NinaBina NinaBina
  • 08-09-2014
  • Mathematics
Answered

Find the number of permutation :
9p2

Answer :

mariamikayla
mariamikayla mariamikayla
  • 08-09-2014
[tex]9P_2= 9*2!= 9*1*2= \boxed{18}[/tex]
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