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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This is a true story, proving...

This is a true story, proving how fascinating the mind of a six year old is. They think so logically.
A teacher was reading the story of the Three Little Pigs to her class.
She came to the part of the story where first pig was trying to gather the building materials for his home.
She read. 'And so the pig went up to the man with the wheelbarrowfull of straw and said: 'Pardon me sir, but may I have some of thatstraw to build my house?'
The teacher paused then asked the class: 'And what do you thinkthe man said?'
One little boy raised his hand and said very matter-of-factly...
'I think the man would have said - 'I'll be a son of a bitch!! A talking pig!'
The teacher had to leave the room.
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Ultrasonic alarm

In 1953, the first U.S. patent for a burglar alarm operated by ultrasonic sound was issued to Samuel Bagno of New York City (No. 2,655,645) on a system for movement detection in a confined space by intruders or fire. It was manufactured as the Alertronic and first sold in Jun 1950. A sound source produced waves of 19,000 hertz, a frequency too high for normal human hearing. An intruder could be detected by the alarm by a difference in frequency of the reflected waves from the moving body (the Doppler effect). The device would then sound an alarm.
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