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What number is twice the sum of it’s digits?

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What number is twice the sum of it’s digits?
posted Jun 12 by anonymous

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2 Answers

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The number 18

answer Jun 12 by Jcm
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18


(a+b)*2=10a+b
b=8a, a=1, b=8
18 is the only answer

answer Jun 28 by Hanifa Mammadov



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