KöMaL 2005 K42
There are two tribes living in Binumeria. The two tribes use numbers expressed in different notations, but the base of each notation is smaller than ten. We asked one man from each tribe how many people there were in the tribe. They both answered 10011, and one of them added that the other tribe had 10 more members and that 1+2=3. How many people live in Binumeria?
Official text KöMaL. Quoted with source.
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