BRAIN TEASERS

# MAGIC SQUARE: Calculate A-B-C

The aim is to place the some numbers from the list (21, 24, 26, 27, 30, 32, 64, 67, 69) 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

### identification

A woman went into a bank to get a check cashed, but she didn't have an account with them. When the teller her asked for some identification, the woman showed her several charge cards, her social security card and a library card.
The teller told her they needed a driver's license, but the woman said she didn't have one.
"Don't you have anything with your picture on it?" the teller asked.
"Oh, sure," she said, as she flipped to a family photo in her wallet. "That's me in the back row."
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### Sir Nevill F. Mott

Died 8 Aug 1996 at age 90 (born 30 Sep 1905). Nevill Francis Mott was an English physicist whoshared(with PhilipW. Anderson and John H. Van Vleck of the U.S.) the 1977 Nobel Prize for Physics for his independent researches on the magnetic and electrical properties of amorphous semiconductors. Whereas the electric properties of crystals are described by the Band Theory - which compares the conductivity of metals, semiconductors, and insulators - a famous exception is provided by nickel oxide. According to band theory, nickel oxide ought to be a metallic conductor but in reality is an insulator. Mott refined the theory to include electron-electron interaction and explained so-called Mott transitions, by which some metals become insulators as the electron density decreases by separating the atoms from each other in some convenient way.
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