valgal106 valgal106
  • 26-12-2017
  • Mathematics
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How many 5-digit passwords are possible for the school email system if the first digit cannot be 0?

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lesliekolleroxrkcf
lesliekolleroxrkcf lesliekolleroxrkcf
  • 26-12-2017
9*10*10*10*10=90000
.....,.........,.,.,
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