Question: A three-character passcode is needed to unlock an assessment for Blackboard. The code can be any combination of numbers (0 - 9)and letters (A -

A three-character passcode is needed to unlock an assessment for Blackboard. The code can be any combination of numbers (0 - 9)and letters (A - Z).

  • If letters and numbers cannot be repeated, how many passcodes are possible?

  • If letters and numbers can be repeated, how many passcodes are possible?

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