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How many 7-letter passwords can you make from the letters A, B, C, D, E, F and G, if letters CANNOT be repeated?

How many 7-letter passwords can you make from the letters A, B, C, D, E, F and G, if letters CANNOT be repeated?
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5 votes
How many 7-letter passwords can you make from the letters A, B, C, D, E, F and G, if letters CANNOT be repeated?

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User AntiGMO
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8.5k points

1 Answer

2 votes
5040 passwords, if 7 is n, n(n-1)(n-2)(n-3)(n-4)(n-5)(n-6). Answer is 5040
answered
User Dan Dascalescu
by
8.2k points
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