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You can't get six odd numbers to add to an odd number in this Universe, so...

a little creative thinking (= "cheating") is needed...

3 + 3 + 3 + 1 + 11 uses 6 digits and the sum is 21...

... if you want to be REALLY "creative", turn one of the nines upside down and you could have 6 + 5 + 5 + 3 + 1 + 1...

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14y ago
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Q: 9999555533331111 whose 6 digits sum is 21?
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