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anonymousstudent:
Geoff needs to create a password for his E-mail account. The password must have three letters. How many different passwords can he make? Assume he may not use each letter more than once.
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TheSmartOne:
Hey there! Welcome to QuestionCove! Do you know how many letters are in the alphabet? Have you learned permutations and combinations?
Macho14:
So I am confused, he can only use letters?
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