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# MAGIC SQUARE: Calculate A-B-C

The aim is to place the some numbers from the list (16, 17, 22, 24, 25, 30, 54, 55, 60, 69, 79, 88) 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: 11
The first user who solved this task is Nasrin 24 T.
#brainteasers #math #magicsquare
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### Cow and grass

Teacher: "I asked you to draw a cow and grass, but I only see a cow. Where is grass?"
Student: "The cow ate the grass, sir."
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### Willard Frank Libby

Died 8 Sep 1980 at age 71 (born 17 Dec 1908). American chemist whose technique of carbon-14 (or radiocarbon) dating provided an extremely valuable tool for archaeologists, anthropologists, and earth scientists. For this development he was honoured with the Nobel Prize for Chemistry in 1960. Libby is a specialist in radiochemistry, particularly hot atom chemistry, tracer techniques, and isotope tracer work. He became well-known at Chicago University also for his work with natural tritium, and its use in hydrology and geophysics. On 18 May 1952, he determined that the age of Stonehenge was 1848 BC, based on analysis of radioisotopes in charcoal.
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