In the multiplication given below, all the digits, except one, were consistently
replaced by another digit:
617
* 702
_______
1639
3733
2807
__________
265699
Find the substitution code and restore the original multiplication.
(In reply to
No Subject by Ady TZIDON)
Ady, while your explanation makes sense if we forget the partial products, I think Jer's point is that the partial products are part of the problem, and given the partial products there is only one valid solution. The fact that one of the digits was invariant in the coded version is thus superfluous, that info is not required to solve the puzzle.
Not a big deal though, it was a good puzzle.

Posted by tomarken
on 20140312 10:06:51 