How many squares?
[752] How many squares? - Finding the number of possible squares in this picture - #brainteasers #math - Correct Answers: 115 - The first user who solved this task is Djordje Timotijevic
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How many squares?

Finding the number of possible squares in this picture
Correct answers: 115
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math
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An Israeli doctor says...

An Israeli doctor says: "Medicine in my country is so advanced that we can take a kidney out of one man, put it in another, and have him looking for work in 6 weeks." A British doctor says: "That is nothing; we can take a lung out of one person, put it in another, and have him looking for work in 4 weeks." A Canadian doctor says: "In my country, medicine is so advanced that we can take half a heart out of one person, put it in another, and have them both looking for work in 2 weeks." A Nigerian doctor, not to be outdone, says: "You guys are way behind...... We just took a man with NO brain, made him President, and now the whole country is looking for work.
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Rock wool

In 1897, a rock wool factory in the U.S., the Crystal Chemical Works, was opened in Alexandria, Ind. Mineral wool had previously been made from blast furnace slag, but the new factory used local limestone rock in a process discovered by Charles Corydon Hall to create a sulphur-free product. The limestone was melted in a specially designed water-jacketed cupola, blown by steam pressure then allowed to cool to form fine threads. Its light, fibrous form resembled freshly-sheared sheep's wool. Being both insectproof and fireproof, rock wool was useful as a filtering material and as an insulating material for such uses as packing walls or for covering steam boilers. In 1929, the works became part of Johns Manville Corp.«
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