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How many 3-digit numbers contain the digit 9?

 Jul 5, 2020
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There are 252 numbers between 100 and 999 that have AT LEAST one 9 in them. If you include all repeated digits such as 199, 999, then there are 280 numbers between 100 and 999 that have 9 in them.

 Jul 5, 2020
edited by Guest  Jul 5, 2020

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