Question 1204748
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It is, probably, two weeks I see incoming problems of this type, day after day;

sometime, several times per day.


My impression is that you do not post them for learning.



My impression is that you work to create an ENCYCLOPEDIA of such tasks,

or to fill some web-site, or to check answers in some problems book,

using the tutors as free of charge work force.



Am I correct and you really use this brilliant business-idea, 
or there is a logical error in my reasoning ?