Calculate the number 300
NUMBERMANIA: Calculate the number 300 using numbers [3, 4, 2, 8, 43, 173] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.Correct answers: 5
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Mobile betatronIn 1948, the first mobile betatron began operation at the U.S. Naval Ordnance Laboratory, White Oak, Maryland. The betatron acclerated electrons using 10 million volts to produce a sharp beam of high-energy X-rays capable of penetrating 16 inches of steel. It was built by General Electric Company of Schenectady, N.Y. |