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Problems from Another Time

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

How a translation of Peano's counterexample to the 'theorem' that a zero Wronskian implies linear dependence can help your differential equations students
In a certain lake, swarming with red geese, the tip of a lotus bud was seen to extend a span [9 inches] above the surface of the water.
A bridge is built across a river in 6 months by 45 men. It is washed away by the current. Required the number of workmen sufficient to build another of twice as much worth in 4 months.
The triangle ABC has a right angle at C. Show that 1/ED=1/AC+1/AB
Determine by using algebra the number of degrees in the angle A where: cos A = tan A
A man went to a draper and bought a length of cloth 35 braccia long to make a suit of clothes.
On an expedition to seize his enemy's elephants, a king marched 2 yojanas the first day.
Two circles, the sum of whose radii is a, are placed in the same plane with their centers at a distance 2a...
Three congruent circles of radius 6 inches are mutually tangent to one another. Compute the area enclosed between them.
A railway train strikes a snowdrift which creates a constant resistance. How long does it take the snow to stop the train?

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