Mathematics, 10.12.2019 05:31 squirrel6875

Two n-digit sequences of digits 0, 9 are said to be of the same type if the digits of one are a permutation of the digits of the other. for n=8, for example, the sequences 03088929 and 00238899 are the same type. how many types of n-digit sequences are there?

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Two n-digit sequences of digits 0, 9 are said to be of the same type if the digits of one are a per...