Daily Brain Teasers for Friday, 15 March 2019
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MAGIC SQUARE: Calculate A-B+CThe aim is to place the some numbers from the list (4, 9, 12, 18, 19, 22, 28, 29, 32, 38, 80, 91) 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.
Best room in the hotel?
The drunk staggered up to the hotel reception and demanded his room be changed.
"But sir," said the clerk, "you have the best room in the hotel."
"I insist on another room!!" said the drunk.
"Very good, sir. I`ll change you from 502 to 555. Would you mind telling me why you don't like 502?" asked the clerk.
"Well, for one thing," said the drunk, "it's on fire."
Emil von BehringBorn 15 Mar 1854; died 31 Mar 1917 at age 63.Emil Adolf von Behring was a German bacteriologist who is considered the founder of the science of immunology. He received in 1901 the first Nobel Prize for Physiology or Medicine for his work on serum therapy, especially its application against diphtheria. In 1890, working with S. Kitasato, he discovered that immunity against tetanus and diphtheria could be produced by injecting serum from an animal that had recovered from the disease. He coined the word antitoxin for such substances. They also showed that the antitoxins thus produced by one animal could immunize another animal and that it could cure an animal actually showing symptoms of diphtheria. This great discovery was soon confirmed and successfully used by other workers.