Calculate the number 817
NUMBERMANIA: Calculate the number 817 using numbers [8, 3, 2, 9, 93, 551] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.Correct answers: 2
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First four-engine planeIn 1913, the first four-engine airplane was first built and flown by Igor Sikorsky of Russia. |