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Mathematics 8 Online
OpenStudy (anonymous):

Abby is registering at a Web site. She must select a password containing 6 numerals to be able to use the site. How many passwords are allowed if no digit may be used more than once?

OpenStudy (anonymous):

there are 10 numbers from 0-9. You need only 6 numbers. Therefore your equation will be 10!/(10-6)!

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