Thread: Russia National Contest Pr 1998-7
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Old 11-03-2007, 02:21 AM
sirio11 sirio11 is offline
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Default Re: Russia National Contest Pr 1998-7
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unless im doing something wrong it seems the answer is 10 nPr 10, or 3628800

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You're counting a lot of numbers not in the solution. Remember, they need to be a multiple of 11111.
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