MAGIC SQUARE: Calculate A-B+C
[3741] MAGIC SQUARE: Calculate A-B+C - The aim is to place the some numbers from the list (15, 16, 17, 18, 26, 27, 28, 52, 64, 65, 66, 89) 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: 31 - The first user who solved this task is On On Lunarbasil
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MAGIC SQUARE: Calculate A-B+C

The aim is to place the some numbers from the list (15, 16, 17, 18, 26, 27, 28, 52, 64, 65, 66, 89) 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: 31
The first user who solved this task is On On Lunarbasil.
#brainteasers #math #magicsquare
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News photographer on plane

His request approved, the news photographer quickly used a cell phone to call the local airport to charter a flight. He was told a twin-engine plane would be waiting for him at the airport. Arriving at the airfield, he spotted a plane warming up outside a hanger. He jumped in with his bag, slammed the door shut, and shouted, ‘Let’s go’. The pilot taxied out, swung the plane into the wind and took off.

Once in the air, the photographer instructed the pilot, ‘Fly over the valley and make low passes so I can take pictures of the fires on the hillsides.’

‘Why?’ asked the pilot.

‘Because I’m a photographer for cable news,’ he responded. ‘And I need to get some close up shots.’

The pilot was strangely silent for a moment, finally he stammered, ‘So, what you’re telling me, is… you’re NOT my flight instructor?’

Found on http://www.americanflyersmorristown.net, posted on November 2009 Newsletter

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Leaded gasoline

In 1921, tetraethyl lead was first given a laboratory test as an anti-knock additive to gasoline fuel. The knock in the one-cylinder laboratory engine was utterly silenced. Even at a strength of only 2-3g grams per gallon (1000 to 1 dilution), it had a remarkable ability to quiet the relentless knocking. This invention of Thomas Midgley, Jr., of the General Motors Research Laboratories, located in Dayton, Ohio, was first put on public sale as ethyl gasoline in the same city on 2 Feb 1923. This invention of leaded gasoline came after seven years of testing at least 33,000 compounds. Previously, on hard acceleration, an engine sometimes made knocking, popping or crackling sounds, which sapped power and could damage the engine.
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