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2016 AMC 8 Question 17

AMC8 · 2016 AMC 8

Question 17

An ATM password at Fred’s Bank is composed of four digits from $0$ to $9,$ with repeated digits allowable. If no password may begin with the sequence $9,$ $1,$ $1,$ then how many passwords are possible?
  1. $ 30 $
  2. $ 7290 $
  3. $ 9000 $
  4. $ 9990 $
  5. $ 9999 $