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Calculate the number 175

Calculate the number 175 using numbers [4, 4, 6, 5, 20, 100] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 64

The first user who solved this task is Sanja Šabović.

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Chuck Norris, Arnold Swartzena...

Chuck Norris, Arnold Swartzenagger, and Jean Claud VanDam, were talking one day. Chuck Norris asked, "If you were a musician, who would you be?".
Chuck Norris said, "I would be Motzart."
Jean Claud VanDam said, "I would be Bethoven."
Arnold then said, "I'll be Bach!"

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Joseph Priestley

Died 6 Feb 1804 at age 70 (born 13 Mar 1733). English chemist, clergyman and political theorist who discovered the element oxygen. His early scientific interest was electricity, but he is remembered for his later work in chemistry, especially gases. He investigated the “fixed air” (carbon dioxide) found in a layer above the liquid in beer brewery fermentation vats. Although known by different names at the time, he also discovered sulphur dioxide, ammonia, nitrogen oxides, carbon monoxide and silicon fluoride. Priestley is remembered for his invention of a way of making soda-water (1772), the pneumatic trough, and recognising that green plants in light released oxygen. His political opinions and support of the French Revolution, were unpopular. After his home and laboratory were set afire (1791), he sailed for America, arriving at New York on 4 Jun 1794.«

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