How a translation of Peano's counterexample to the 'theorem' that a zero Wronskian implies linear dependence can help your differential equations students

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

There is a log 18 feet long, the diameter of the extremities being 1 ft and 2.6 ft respectively...

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

Discussion of 15th century French manuscript, with translation of its problems, including one with negative solutions

A gentleman has a garden of rectangular form and wants to construct a walk of equal width half way round to take up half the garden. What must be the width of this walk?

A man went to a draper and bought a length of cloth 35 braccia long to make a suit of clothes.

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.

Two cog-wheels, one having 26 cogs, and the other 20 cogs, run together. In how many revolutions of the larger wheel will the smaller gain in 12 revolutions?