jjiopppotdd6675 jjiopppotdd6675
  • 16-10-2017
  • Mathematics
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How many 5-digit numbers (including leading 0s) are there with no digit appearing exactly two times?

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Аноним Аноним
  • 16-10-2017
total numbers if all  digits are different = 10P5  = 10! / 5!  =  30
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