Calculate the number 791
NUMBERMANIA: Calculate the number 791 using numbers [1, 5, 5, 3, 21, 767] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.Correct answers: 2
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Oil wellIn 1859, “Colonel” Edwin L. Drake drilled the first successful oil well in the United States, near Titusville, Pennsylvania. The drilling had reached 69 feet 6 inches, when a dark film floating on the water below the derrick floor was noticed. |