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How Many Triangles are insid...

How Many Triangles are inside me?

Correct answers: 123

The first user who solved this task is Maja Inkret.

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Confident and confidential

Son - "Dad whats the difference between confident and confidential?"

Dad - "Hmm. You are my son. Of that I am confident. Your friend Timmy is also my son. That's confidential."

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Refrigeration

In 1879, African-American Thomas Elkins patented a refrigerating apparatus (No. 221,222) designed for chilling or cooling food, or even, according to the patent, human corpses. A porous chilling box enveloped in fabric rests on a grated floor through which a circulation of air aids the evaporation of water supplied from a trough to the fabric. As the water evaporates, latent heat is withdrawn from the chilling box. He also held patents for a table (a dining and ironing table combined with a quilting frame, 20 Feb 1870, No. 100,020) and a commode (9 Jan 1872, No. 122,518).

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