studiot Posted May 7, 2023 Posted May 7, 2023 Since I stumbled badly over @Genady shape puzzle, I thought I would dig out this old Victorian number puzzle for him Some here will have seen this one before. Unfortunately I have lost all of the digits except one so I wonder if he can help ? It is a simple long division, presented the English way with the result (quotient) on top. That is a six digit dividend divided by a three digit divisor on the left. There is no remainder. (I believe that some Americans put the quotient on the right not above as I have done). The grid paper is simply there to correctly align the digits.
Genady Posted May 7, 2023 Posted May 7, 2023 39 minutes ago, studiot said: Since I stumbled badly over @Genady shape puzzle, I thought I would dig out this old Victorian number puzzle for him Some here will have seen this one before. Unfortunately I have lost all of the digits except one so I wonder if he can help ? It is a simple long division, presented the English way with the result (quotient) on top. That is a six digit dividend divided by a three digit divisor on the left. There is no remainder. (I believe that some Americans put the quotient on the right not above as I have done). The grid paper is simply there to correctly align the digits. Thank you. I understand that xxx * 7xx = xxxxxx but I don't know what other information, if any, it gives me, because the Russian way of long division, which I did in school, was quite different: DIVIDE THE NUMBERS [RUSSIAN STYLE] - WITH REMAINDER explained by Photomath - YouTube (I assume that the x's are just placeholders.)
studiot Posted May 8, 2023 Author Posted May 8, 2023 21 hours ago, Genady said: Thank you. I understand that xxx * 7xx = xxxxxx but I don't know what other information, if any, it gives me, because the Russian way of long division, which I did in school, was quite different: DIVIDE THE NUMBERS [RUSSIAN STYLE] - WITH REMAINDER explained by Photomath - YouTube (I assume that the x's are just placeholders.) I would not hlike to solve this using 'russian multiplication or division. Incidentally this method goes back at least as far as the Babylonians. You assessment is correct call it ABC * 7EF = GHIJKL if you don't like the X 's If you work through the usual western division the position of the 7 is important and enables the logical deduction of all the digits. We can do this if you are interested.
Genady Posted May 8, 2023 Posted May 8, 2023 I'd like to try before I give up. I'm sure I miss something because here, I pick numbers almost arbitrarily and get this: What is wrong with it?
geordief Posted May 8, 2023 Posted May 8, 2023 8 minutes ago, Genady said: I'd like to try before I give up. I'm sure I miss something because here, I pick numbers almost arbitrarily and get this: What is wrong with it? That was quick
Genady Posted May 16, 2023 Posted May 16, 2023 I've noticed another old puzzle that reminded me the puzzle in the OP. The solution is unique.
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