BRAIN TEASERS

# MAGIC SQUARE: Calculate A*B+C

The aim is to place the some numbers from the list (10, 11, 12, 15, 16, 18, 22, 23, 24, 30, 35, 53) 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.
The first user who solved this task is Nílton Corrêa De Sousa.
#brainteasers #math #magicsquare

### Train Test

Tom is applying for a job as a signalman for the local railroad and is told to meet the inspector at the signal box.
The inspector decides to give Tom a pop quiz, asking: "What would you do if you realized that two trains were heading towards each other on the same track?"
Tom says: "I would switch one train to another track."
"What if the lever broke?" asks the inspector.
"Then I'd run down to the tracks and use the manual lever down there", answers Tom.
"What if that had been struck by lightning?" challenges the inspector.
"Then," Tom continued, "I'd run back up here and use the phone to call the next signal box."
"What if the phone was busy?"
"In that case," Tom argued, "I'd run to the street level and use the public phone near the station".
"What if that had been vandalized?"
"Oh well," said Tom, "in that case I would run into town and get my Uncle Leo".
This puzzled the inspector, so he asked, "Why would you do that?"
"Because he's never seen a train crash."

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## Brain Teasers

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### Joseph-Michel Montgolfier

Died 26 Jun 1810 at age 69 (born 26 Aug 1740). French inventor and balloonist who with his younger brother, Étienne conducted an initial experiment with a balloon of taffeta filled with hot smoke was given a public demonstration on 5 Jun 1783. This pioneering work was followed by a flight carrying three animals as passengers on 19 Sep 1783, shown in Paris and witnessed by King Louis XVI. On 21 Nov 1783, their balloon carried the first two men on an untethered flight. In the span of one year after releasing their test balloon, the Montgolfier brothers had enabled the first manned balloon flight in the world.[DSB gives that he was baptised Michel Joseph, but was generally known as Joseph Michel.]
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