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How To Train Your Robot

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Posted on 2019-07-062019-07-06

Analyzing Scott Flansburg’s Nines Trick

There’s an old math trick that goes like so – choose any number… say 171…. add the digits and subtract.
171-9 = 162
Take its sum of digits and subtract them…
162 – 9 = 153
Take its sum of digits and subtract them… Continue reading “Analyzing Scott Flansburg’s Nines Trick”

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