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Little explorations with HP calculators (no Prime)
03-16-2017, 02:07 AM
Post: #4
RE: Little explorations with the HP calculators
Is it even possible for a calculator or computer to "know" the things we see right off? Like if C <> D then the addition has to have a carry, which cannot possibly be more than one, therefore D = C+1? Or that to cause a carry, C > 4?

Once you know that then you can ignore the tens column's C and D completely and just use the carry. C + C = 14.

Interesting, too, that the whole puzzle will still "work" with the sum as D0, D2, or D6. I love my HPs and have RPNed for very close to 45 years now, but I'm glad our brains are far enough above them to actually have fun trying to make them figure out something like this puzzle.
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RE: Little explorations with the HP calculators - ekubaskie - 03-16-2017 02:07 AM



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