El problema alpinista

Abajo, a una altura de 60 metros, hay otra plataforma.
Sobre ella, a dos metros del borde de un árbol crece.
El escalador pesa 70 kilogramos y la mochila pesa 5 kilogramos.
Escalador perdió su cuchillo. Solo tiene una cuerda. More

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About Aleksandr Anufriyev

Aleksandr Anufriyev grew up in Balakovo, Russia, and graduated from Saratov Polytechnic Institute.
His major speciality is electromechanical engineering.
Now he lives in Lansing, Michigan, USA.
He wants to be a writer.
His first book was ” The Flying car”.
The second one was “Inventions Around Us”.
Lastly, his third book was called “Time”.
He loves to read good books.
And he wants to write good books.

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