Passwords A personal password for an Internet brokerage
Chapter 12, Problem 971(choose chapter or problem)
Passwords A personal password for an Internet brokerage account is to consist of a letter, followed by two digits, followed by two letters. Determine the number of personal codes possible if the first digit cannot be zero and repetition is permitted.
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer