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The third part of a necklace of pearls, broken in a lover's quarrel, fell to the ground...
A speculator bought stock at 25% below par and sold it at 20% above par. He gained $1560. How much did he invest?

Author Keith Devlin argues that the impact of the Pisan merchant and his Arabic numbers on medieval Europe was even greater than previously thought.

Three vertical posts along a straight canal, each rising to the same height above the surface of the water. By looking at the line of vision, determine, to the nearest mile, the radius of the earth.
This is the title page of the first textbook in the calculus of variations, Leonhard Euler's Method of Finding Curved Lines that Show some Property of Maximum or Minimum. It was published in 1744.
What will the diameter of a sphere be, when its volume and surface area are expressed by the same number?
There were two men, of whom the first had 3 small loaves of bread and the other, 2.
Request from the editors.
A square walled city of unknown dimensions has four gates, one at the center of each side.
If 80 dollars worth of provisions will serve 20 men for 25 days, what number of men will the same amount of provisions serve for 10 days?

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