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MAGIC SQUARE: Calculate A+B-C

The aim is to place the some numbers from the list (4, 8, 9, 10, 11, 12, 13, 59, 60, 61, 80) 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.
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A couple was making their firs...

A couple was making their first doctors visit prior to the birth of their first child. After the exam, the doctor took a small stamp and stamped the wife’s stomach with indelible ink. The man and his wife were curious about what the stamp was for, so when they got home, the man took out his magnifying glass to try to see what is was. In very small letters, the stamp said, “When you can read this, come back and see me.”
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Count Eigil Knuth

Born 8 Aug 1903; died 12 Mar 1996 at age 92.Danish explorer, archaeologist, sculptor and author whose extensive research in Greenland unearthed traces of previously unknown ancient North American Eskimo or Inuit cultures, dating back more than 5,000 years. He made the first of more than thirty expeditions in 1932 to take part in the Danish National Museum's excavations of 1,000-year-old Viking settlement ruins in west Greenland. The climax of Knuth's career was the discovery in three four-man summer treks from 1987 to 1989 of the ruins of 520 crude circular dwellings along the coast of the Ile de France off northeast Greenland, which cast new light on primitive Arctic civilisation. Active throughout his life, he made his only expedition only a year before his death.
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