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It's usual exercises for school in Russia. I don't find any difficult problems. I mean all except English.

True, but it wasn't typical Russian school level in 1868.

check this out http://upload.wikimedia.org/wikipedia/commons/a/a7/BogdanovB... this is a painting from 1895 pupils were supposed to do calculations like the one on the blackboard in their heads, without any writing

It's not algebra, you wouldn't have gotten to MIT with that even back then.