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You can select 9 numbers for the first digit, 8 numbers for the second digit, and 7numbers for the third digit; so 504 (e.g. 9*8*7) different three digit numbers can be written using the digits 1 through 9.

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โˆ™ 2009-10-09 21:36:26
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Q: How many different three digit numbers can be written using the digits 1 through 9?
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Related questions

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