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  • 15-11-2019
  • Mathematics
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how many permutations of a 7-digit phone number exist

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MathPhys
MathPhys MathPhys
  • 15-11-2019

Answer:

10,000,000

Step-by-step explanation:

There are 10 possible numbers for each digit (0-9).  So the number of permutations is 10^7, or 10 million.

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