skim2004sk skim2004sk
  • 20-05-2018
  • Mathematics
contestada

There are nine kids in a class. When any two meet, each says "hi" to the other and the answer "hi" follows. Before the class starts, how many times would one hear the word "hi"?

Respuesta :

dasiajohnson121 dasiajohnson121
  • 20-05-2018
72 times, I believe. Hope I helped.
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