One says that 10 is divided into three parts and if the small part is multiplied by itself and added to the middle one multiplied by itself the result is the large one multiplied by itself...

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?

Imagine an urn with two balls, each of which may be either white or black. One of these balls is drawn and is put back before a new one is drawn.

There are two numbers which are to each other as 5 and 6 and the sum of their squares is 2196. What are the numbers?

Suppose a ladder 60 feet long is placed in a street so as to reach a window 37 feet above the ground on one side of the street...

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

Twenty-three weary travelers entered a delightful forest. There they found 63 numerically equal piles of plantain fruit.

A certain bishop ordered that 12 loaves be divided among his clergy.

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