SOLUTION: The letters a, b, c, and d will be used to form passwords for the schools computer system. How many 4 letter passwords maybe formed if the letters can be used more than once in any

SOLUTION: The letters a, b, c, and d will be used to form passwords for the schools computer system. How many 4 letter passwords maybe formed if the letters can be used more than once in any

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Question 15710: The letters a, b, c, and d will be used to form passwords for the schools computer system. How many 4 letter passwords maybe formed if the letters can be used more than once in any passwrd?

Answer by cassiroberts(11) (Show Source): You can put this solution on YOUR website!
there can be 20 four letters passwords formed
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