pumpkin2211
pumpkin2211 pumpkin2211
  • 03-10-2016
  • Mathematics
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How many 3-character passwords can be made (using letters and digits) if each password must contain at least 2 digits (digits can be repeated)?

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Аноним Аноним
  • 03-10-2016
At least 9*9*8 * 26*25*24 = 10108800
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