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One day, River writes down the numbers \(1, 2, ..., 999.\)

What is the sum of all the digits that River wrote down?

 Jun 27, 2020
edited by Guest  Jun 27, 2020
 #1
avatar+500 
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"deleted"

 Jun 27, 2020
edited by amazingxin777  Jun 27, 2020
 #2
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But this is the sum of digits, not numbers

Guest Jun 27, 2020
 #3
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The sum of all the digits is 19998.

 Jun 27, 2020
 #4
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The sum of all digits: 1 + 2 + 3 + 4 +.............+ 9 + 9 + 8 + 9 + 9 + 9 = 13,500 - sum of all digits from 1 to 999 inclusive.

 Jun 27, 2020

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