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Calculate the number 2641

NUMBERMANIA: Calculate the number 2641 using numbers [8, 7, 2, 3, 95, 399] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 25

The first user who solved this task is Thinh Ddh.

#brainteasers #math #numbermania

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My wallet

My wallet is like an onion.

When I open it, it makes me cry.

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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 As the water evaporates, latent heat is withdrawn from the chilling box.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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