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Eugenio G. F. de Kereki

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last 3 solved tasks
If c780b - a2cb0 = bbabb find number abc. Multiple solutions may exist.
NUMBERMANIA: Calculate the number 1937 using numbers [1, 2, 6, 3, 73, 639] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
If c7a57 + ac7b2 = 812ab find number abc. Multiple solutions may exist.

Alexandre-Emile Beguyer de Chancourtois

Died 14 Nov 1886 at age 66 (born 20 Jan 1820).French geologist who was the first to arrange the chemical elements in order of atomic weights (1862). De Chancourtois plotted the atomic weights on the surface of a cylinder with a circumference of 16 units, the approximate atomic weight of oxygen. The resulting helical curve which he called the telluric helix brought closely related elements onto corresponding points above or below one another on the cylinder. Thus, he suggested that "the properties of the elements are the properties of numbers." Although his publication was significant, it was ignored by chemists as it was written in the language of geology, and the editors omitted a crucial explanatory table. It was Dmitry Mendeleyev's table published in 1869 that became most recognized.

A game of baseball

St. Peter and Satan were having an argument one day about baseball. Satan proposed a game to be played on neutral grounds between a select team from the heavenly host and his own hand-picked boys.

"Very well," said the gatekeeper of Heaven. "But you realize, I hope, that we've got all the good players and the best coaches."

"I know, and that's all right," Satan answered unperturbed. "We've got all the umpires."

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