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2 August, 02:36

A new school randomly assigns a six-character student code to every prospective student. The school uses the characters 1, 2, 3, 4, 5, X, Y, and Z. If none of the student codes contain a repeated character, what is the total number of codes that can be randomly assigned?

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  1. 2 August, 02:45
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    First char can choose from 8 characters, second only from 7, and so forth ...

    8x7x6x5x4x3 = 20160 possibilities
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