How many cubes are there?
Cubes of the same size are stacked in the corner of a room as shown. How many cubes are there?Correct answers: 176
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #riddles
Carborundum furnaceIn 1896, Edward G. Acheson was issued a U.S. patent for an electric furnace used to produce carborundum (silicon carbide), one of the hardest industrial substances (No. 560,291). The furnace used an electric current passed through a core of carbon rods to produce a strong heating effect resulting from their resistance.« |