BRAIN TEASERS

Monthly Archive - October 2021 (page 4)

brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 31 to 40.

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Calculate the number 4795

NUMBERMANIA: Calculate the number 4795 using numbers [6, 7, 7, 2, 82, 702] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 7

The first user who solved this task is Nasrin 24 T.

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Heart surgery

In 1893, the suture of the pericardium (the fluid sac surrounding the heart muscle) performed by Dr. Daniel Hale Williams. When a 24-yr-old victim of a stabbing during a bar-fight was brought to Provident Hospital in Chicago, Williams operated without using anesthesia to remove the knife, open the thoracic cavity, then suture the wound to the pericardium, a daring procedure for the time. He allowed a small (1/10" long) nick to heal on its own. The patient recovered and lived for at least 20 years afterward. Dr. Williams was the only African-American in a group of 100 charter members of the American College of Surgeons in 1913. He founded and became the first vice-president of the National Medical Association.«

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