Calculate the number 216
[5611] Calculate the number 216 - NUMBERMANIA: Calculate the number 216 using numbers [3, 7, 9, 2, 36, 273] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 25 - The first user who solved this task is Djordje Timotijevic
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Calculate the number 216

NUMBERMANIA: Calculate the number 216 using numbers [3, 7, 9, 2, 36, 273] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 25
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #numbermania
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Door To Door

Two salesmen were going door to door, and knocked on the door of a woman who was not happy to see them. She told them in no uncertain terms that she did not want to hear their offer and slammed the door in their faces. To her surprise, however, the door did not close and, in fact, bounced back open. She tried again, really put her back into it, and slammed the door again with the same result-the door bounced back open.
Convinced these rude young people were sticking their foot in the door,she reared back to give it a slam that would teach them a lesson, when one of them said:

“Ma'am, before you do that again you need to move your cat.”

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Thomas L. Willson

Died 20 Dec 1915 at age 55 (born 14 Mar 1860).Thomas Leopold Willson was a Canadian-American chemist and inventor who discovered a commercial production method for calcium carbide using an electric arc furnace. In 1893, he started a company with John Motley Morehead III in Spray, North Carolina, to try his ideas to obtain aluminium metal from its oxide. On 2 May 1892, he was using an electric arc furnace with coal tar and burnt chalk (lime). An unexpected dark, solid mass was formed. On cooling with water, a gas was given off. This burned with a bright yellow, smoky flame. Analysis showed these were calcium carbide and acetylene. Unlike the earlier method of Wöhler that made calcium carbide in an amorphous form, Willson had a hard, aggregated chrystalline form. He obtained (and defended) patents on his process. He assigned them to the Electro Gas Co. (which became Union Carbide Corp.) His other inventions included gas navigational buoys and electric arc lighting. He established calcium carbide manufacturing in Canada.«
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