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Mathematics 8 Online
OpenStudy (anonymous):

Carlos is choosing a -letter password from the letters A, B, C, D, E, and F. The password cannot have the same letter repeated in it. How many such passwords are possible? Use the Permutation theory. Carlos is choosing a -letter password from the letters A, B, C, D, E, and F. The password cannot have the same letter repeated in it. How many such passwords are possible? Carlos is choosing a -letter password from the letters A, B, C, D, E, and F. The password cannot have the same letter repeated in it. How many such passwords are possible?

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