>>11506014You are correct. Of course in the Western world (see below) we always put 1 on the left, which is why 4mm is the specified answer.
>>11506018Good point! It crossed my mind too whether the left-to-right convention is really so universal, but in any case that would be the case for the average audience of this website (being manifestly Western).
>>11506015>>11506017I hestitated to respond to this. They are 2cm thick. A Pushkin book is say 1000 pages. Therefore a single page is 0.02mm thick, i.e. pretty much zero. A child's mind will accept this. An autistic mathematician, not bothered by the practical context of the question and concerned only with the formal numbers, will squirm about my claim that 0.02 is pretty much 0.
It is not a matter of inferiority per se; merely, a striking difference.