MAGIC SQUARE: Calculate A+B+C
[5625] MAGIC SQUARE: Calculate A+B+C - The aim is to place the some numbers from the list (7, 8, 9, 25, 26, 27, 28, 29, 30, 32) into the empty squares and squares marked with A, B an C. Sum of each row and column should be equal. All the numbers of the magic square must be different. Find values for A, B, and C. Solution is A+B+C. - #brainteasers #math #magicsquare - Correct Answers: 17 - The first user who solved this task is Djordje Timotijevic
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MAGIC SQUARE: Calculate A+B+C

The aim is to place the some numbers from the list (7, 8, 9, 25, 26, 27, 28, 29, 30, 32) into the empty squares and squares marked with A, B an C. Sum of each row and column should be equal. All the numbers of the magic square must be different. Find values for A, B, and C. Solution is A+B+C.
Correct answers: 17
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #magicsquare
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Steel-making patent

In 1857, a U.S. patent was issued to William Kelly for Manufacturing of Iron and Steel (No. 17628). Although he had been experimenting with the steel-making process for a few years, he had not patented it until he heard that Henry Bessemer had been granted a patent on a like process. Kelly had not filed first, but he was able to convince the patent office that he was the first to invent the air-blast method of forming steel from iron in a cupula. Kelly thus held rights of priority for his patent. However, Bessemer had important additional steps worked out to mass-produce steel. Bessemer was a businessman and industrialist who made the Bessemer process profitable, but Kelly still benefitted from his share, though smaller, of the vast profits.«[Image: Kelly's converter illustrated from patent diagram, Red arrows indicate the tuyeres through which an air blast is introduced.]
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