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Can you calculate the number...

Can you calculate the number of triangles in the given picture?

Correct answers: 117

The first user who solved this task is Djordje Timotijevic.

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Jim Gaffigan: Lazy for No Reason

You ever find yourself being lazy for no reason at all? Like you pick up your mail, you go in your house, you realize you have a letter for a neighbor -- you ever just look at the letter and go, 'Hm, looks like they're never getting this. Takes too much energy to go outside.'

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Soda fountain

In 1870, Gustavus Dows of Lowell, Mass. received his first patent (No. 99,170) for an "Improved Soda Fountain" being the vessel in which carbon dioxide was injected, both forming the soda-water beverage, and delivering the drink using the internal pressure. His improvement was to fit it with an internal perforated partition to improve aeration during oscillation. Earlier, he had had made the first ornamented soda fountain in the U.S. (1858), made from white Italian marble with spread eagles perched on the syrup cocks. He invented a double stream draft arm and cock, for a large or small stream (1862). From 1863, he made and sold soda fountains for $225 each. The first U.S. soda fountain patent was granted to Jacob Ebert and George Dulty (24 Apr 1833).

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