rvwhaley rvwhaley
  • 18-12-2016
  • Mathematics
contestada

Three research departments have
9

,
8

, and
7

members, respectively. Each department is to select a delegate and an alternate to represent the department at a conference. In how many ways can this be done?  

Respuesta :

MathisLif3
MathisLif3 MathisLif3
  • 18-12-2016
P (9,2) + P(8,2) + P (7,2)
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