SOLUTION: A witness to a bank robbery somewhere in Quezon City reported to the police that he saw the suspects escape in vehicle with a license plate beginning with the letters WJK followed

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Question 466924: A witness to a bank robbery somewhere in Quezon City reported to the police that he saw the
suspects escape in vehicle with a license plate beginning with the letters WJK followed by three
digits. Find the minimum number of automobile registrations the police may have to check if:
a. the witness cannot recall the last three digits.
b. the witness cannot recall the last three digits, but is certain that all three digits are unique to
each other.
c. If the witness cannot recall the last three digits, but is certain that all three digits are unique
to each other and that the bank robbery took place last Wednesday while the Unified
Vehicle Volume Reduction Program (UVVRP) is in effect.
Answer by Big Poop(157) About Me  (Show Source):