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That depends on how many of the digits are repeated. If no digits are repeated, you have 9 choices for the first digit, 8 choices for the second, etc.; for a total of 9 x 8 x 7 x 6 x 5 x 4.

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9y ago

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There are 84 combinations.

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9y ago
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Q: How many six digit combinations are available from a 9 digit number?
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