carlitosbj6364 carlitosbj6364
  • 15-02-2018
  • Mathematics
contestada

How many two digits numbers can you write using 1 and 2 repeat?

Respuesta :

mariahmendez
mariahmendez mariahmendez
  • 15-02-2018
Well here is a list: 11, 12, 22, 21
so the answer is 4.
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