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What is the sum of the digits of all 2-digit numbers from 10-99?
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What is the sum of the digits of all 2-digit numbers from 10-99?

User Fresko
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2 Answers

7 votes
this took forever to do but 176879
User Shuiyouren
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6.9k points
5 votes
Huh, well the sum is just adding the numbers together, so the answer is 4905.
User Dara Kong
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6.9k points
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