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Problems from Another Time

Individual problems from throughout mathematics history, as well as articles that include problem sets for students.

A number of 3 digits in base 7 has the same three digits...
On an expedition to seize his enemy's elephants, a king marched 2 yojanas the first day.
If two Post-boys, A and B at 59 miles distance from one another, set out in the morning in order to meet...
A railway train strikes a snowdrift which creates a constant resistance. How long does it take the snow to stop the train?
The square of a certain number multiplied by itself and by 200 is 446,976. What is the number?
One military horse cannot pull a load of 40 dan; neither can 2 ordinary horses, nor can three inferior horses.
Suppose that for every 4 cows a farmer has, he should plow 1 acre of land, and allow 1 acre of pasture for every 3 cows; how many cows could he keep on 140 acres?
Three men have a pile of money, their shares being 1/2, 1/3 and 1/6. Each man takes some money from the pile until nothing is left.
The cavity of our chimney is an upright parallelepiped, the diagonal of whose base is 60"; and the height of the lower side of the lintel above the plane of the floor is 40".
A person has a circular yard that is 150 ft. in diameter, and wishes a walk of equal width made round it within the fence...

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