Calculate the number 920
NUMBERMANIA: Calculate the number 920 using numbers [4, 3, 7, 7, 28, 834] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.Correct answers: 1
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Edison patentIn 1889, Thomas A. Edison was issued a patent for an "Electrical Distribution System" (U.S. No. 404,902). |