People Twitter

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People tweeting stuff. We allow tweets from anyone.

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It looks so wrong (sh.itjust.works)

submitted 1 week ago by [email protected] to c/[email protected]

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[–] [email protected] 1 points 5 days ago

Or the way I do it:

3 * 20 = 60
60 - 51 = 9
20 - (9 / 3) = 17

So the factors are 17 and 3. I know 3 is a factor because 5+1=6, which is divisible by 3, so I just use a convenient multiple of 3 that's pretty close to the actual number to get the divisor.

I have young kids and they keep asking me to do crazy math problems while driving, so that's generally the trick I use.