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What is the 1000th number, beginning with 1 on the numberline and up, whose digits sum up to 20 ?. Thanks for help.

 Sep 16, 2020
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As far as I know, the only way to check thousands of numbers to see if their digits sum up to 20 is to to write a short computer code and check them one by one. I wrote just such a programme and counted ALL the numbers that sum up to 20, and the 1000th number is =15,770.

 Sep 16, 2020

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