Calculate the number 547
NUMBERMANIA: Calculate the number 547 using numbers [4, 9, 2, 5, 13, 130] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.Correct answers: 3
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Priestley's laboratory destroyedIn 1791, chemist Joseph Priestley's laboratory, home and library in Birmingham were burned to destruction by a mob of people angry at his support of the French Revolution. Within a few years, on 7 Apr 1794, he forever left England and travelled to the United States. Priestley discovered oxygen nearly 20 years earlier, on 1 Aug 1774. |