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24-01-2018
Mathematics

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Positive integers less than 100 have at least one digit that is a 9?

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episodegirl903 episodegirl903

24-01-2018

9,19,29,39,49,59,69,79,89,90,91,92,93,94,95,96,97,98,99
There are 19 of those assuming that you don't include decimals which would then make it an infinite amount.

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