zones123 zones123
  • 08-04-2018
  • Mathematics
contestada

How many length-6 strings over Σ = {0, 1, 2} have exactly two 2’s?

Respuesta :

obenam obenam
  • 19-04-2018
Since the string has already two 2, then we will compute the whole number of strings whose length is 4, over the alphabet {0,1}:[tex]2^4=16.[/tex]
There is then 16 such strings. 
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