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ProbabilityQ&A LibraryA computer system allows user IDs that are six characters long. If only alphanumeric characters are allowed (either an upper case letter in the standard English alphabet, lower case letter, or a digit), a. how many user IDs are possible, if repetition is allowed? b. How many user IDs are possible, if no repetition is allowed?Start your trial now! First week only $4.99!*arrow_forward*

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A computer system allows user IDs that are six characters long. If only alphanumeric characters are allowed (either an upper case letter in the standard English alphabet, lower case letter, or a digit), a. how many user IDs are possible, if repetition is allowed? b. How many user IDs are possible, if no repetition is allowed?

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