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.

What proportions of sugar at 8 cents, 10 cents and 14 cents per pound, will compose a mixture worth 12 cents per pound?

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

Fibonacci gave a practical rule for approximating the area of an equilateral triangle.

What will the diameter of a sphere be, when its volume and surface area are expressed by the same number?

A man has four creditors. To the first he owes 624 ducats; to the second, 546; to the third, 492; and to the fourth 368.

The dimensions of a rectangular box in inches are expressed by three consecutive numbers. The surface of the box is 292 square inches. Find the dimensions.

Given two circle tangent at the point P with parallel diameters AB, CD, prove that APD and BPC are straight lines.

A man bought a number of sheep for $225; 10 of them having died, he sold 4/5 of the remainder for the same cost and received $150 for them. How many did he buy?

A barrel has various holes in it. The fist hole empties the barrel in three days...