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A puzzle related to mathematical facts and objects, whose solution needs mathematical arguments. General mathematics questions are off-topic but can be asked on Mathematics Stack Exchange.

28 votes
1 answer
1k views

Alien decimal numeral system

During our travels around the galaxy we found many alien cultures with different number systems. However, this specific civilization was quite interesting: they had a decimal numeral system, just like …
Megaptera novaeangliae's user avatar
2 votes
1 answer
162 views

Alien decimal numeral system, part II

(continuation...) My alien friend said "do you think our system is strange? You need to have a look at our neighbour country, this is how they do it...", and then he showed me their neighbour's system …
Megaptera novaeangliae's user avatar