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OpenStudy (anonymous):
Chris needs to make a six-letter password for his e-mail account. If no two letters of the alphabet can be duplicated for the password, how many possible passwords can he create? a. 26 × 25 × 24 × 23 × 22 × 21 b. 6 × 26 × 25 × 24 × 23 × 22 × 21 c. 26 × 26 × 26 × 26 × 26 × 26 d. 26 × 6
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