GRE Problem Solving Question 614

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Source: Magoosh

A popular website requires users to create a password consisting of digits only. If no digit may be repeated and each password must be at least 9 digits long, how many passwords are possible?

  • A 9!+10!
  • B 2*10!
  • C 9!*10!
  • D 19!
  • E 20!

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