BRAIN TEASERS

# MAGIC SQUARE: Calculate A+B-C

The aim is to place the some numbers from the list (8, 9, 14, 24, 25, 30, 45, 46, 51, 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.
The first user who solved this task is Nasrin 24 T.
#brainteasers #math #magicsquare

### An English teacher reminds her...

An English teacher reminds her students of the written test in her class tomorrow:
"Now, I don't want anyone to miss this important finals exam! I will not tolerate any excuse whatsoever for your absence--unless of course you had to go to the hospital because of a serious injury, or someone died in your immediate family."
Just after she spoke, a wise ass in the back of the class exclaims: "Well, what if I were to tell you that I didn't show up for the test because I experienced complete and utter sexual exhaustion?"
The students in the class try to suppress their snickers and muffled laughter.
The teacher looks sympathetically towards the young man, smiles slyly and states: "Well, then...you'll have to write with your other hand".
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## Brain Teasers

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### Johann Salamo Christoph Schweigger

Born 8 Apr 1779; died 6 Sep 1857 at age 78.German physicist who invented the galvanometer (1820), a device to measure the strength of an electric current. He developed the principle from Oersted's experiment (1819) which showed that current in a wire will deflect a compass needle. Schweigger realized that suggested a basic measuring instrument, since a stronger current would produce a larger deflection, and he increased the effect by winding the wire many times in a coil around the magnetic needle. He named this instrument a “galvanometer”in honour of Luigi Galvani, the professor who gave Volta the idea for the first battery. Thomas Seebeck (1770-1831) named the innovative coil, Schweigger's multiplier. It became the basis of moving coil instruments and loudspeakers.
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