A tree 100 units high is 200 units distant from a well; from this tree one monkey climbs down and goes to the well...

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

If an equilateral triangle whose area is equal to 10,000 square feet be surrounded by a walk of uniform width, and equal to the area of the inscribed circle, what is the width of the walk?

Given a guest on horseback rides 300 li in a day. The guest leaves his clothes behind. The host discovers them after 1/3 day, and he starts out with the clothes.

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

Having been given the lengths, a and b, of two straight lines drawn from the acute angles of a right triangle to the middle of the opposite sides, determine the length of those sides.

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.

A mouse is at the top of a poplar tree 60 braccia high, and a cat is on the ground at its foot. The mouse decends 1/2 a braccia a day and at night it turns back 1/6 of a braccia.

The triangle ABC has a right angle at C. Show that 1/ED=1/AC+1/AB

Prove geometrically that the hypocycloid is a straight line when the radius of the rolling circle is one-half the radius of the fixed circle.

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