MAGIC SQUARE: Calculate A+B-C
[7245] MAGIC SQUARE: Calculate A+B-C - The aim is to place the some numbers from the list (3, 12, 15, 16, 22, 24, 25, 26, 39, 42, 43, 58) 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: 3
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MAGIC SQUARE: Calculate A+B-C

The aim is to place the some numbers from the list (3, 12, 15, 16, 22, 24, 25, 26, 39, 42, 43, 58) 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: 3
#brainteasers #math #magicsquare
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Senior Citizen

Two businessmen in Florida were sitting down for a break in their soon-to-be new store. As yet, the store wasn't ready, with only a few shelves set up. One said to the other, ' I bet any minute now some senior citizen is going to walk by, put his face to the window, and ask what we're selling.'
No sooner were the words out of his mouth when, sure enough, a curious senior citizen walked to the window, had a peek, and in a soft voice asked
"What are you sellin' here?"
One of the men replied sarcastically, "We're selling assh*les."
Without skipping a beat, the old timer said, "You're doing well. Only two left."

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Three element vacuum tube

In 1907, the three-element vacuum tube was issued a U.S. patent to its inventor, Dr Lee de Forest as a “device for amplifying feeble electric currents - such, for example, as telephone currents” (No. 841,387). The tube was evacuated, with some remaining conducting gas molecules, and it was suggested using for the heated electrode such material as platinum, tantalum or carbon. He had made a public annoucement of his device a few months earlier, on 20 Oct 1906 at a meeting of the American Institute of Electrical Engineers held in New York City. On 18 Feb 1908, he received another patent for the grid electrode tube (No. 879,532).
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