Try to solve this mathematic...
Try to solve this mathematical puzzle. Find the missing number.Correct answers: 99
The first user who solved this task is Djordje Timotijevic.
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Oil well fireIn 1861, the first oil well fire occurred at the Little and Merrick well at Oil Creek, near Rouseville, Pennsylvania. It ignited shortly after gushing, burned for three days, and resulted in 19 deaths. |