Suppose that for every 4 cows a farmer has, he should plow 1 acre of land, and allow 1 acre of pasture for every 3 cows; how many cows could he keep on 140 acres?

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

Having been given the perimeter and perpendicular of a right angled triangle, it is required to find the triangle.

The cavity of our chimney is an upright parallelepiped, the diagonal of whose base is 60"; and the height of the lower side of the lintel above the plane of the floor is 40".

Determine the dimensions of the least isosceles triangle ACD that can circumscribe a given circle.

Given a number, take 1/3 of the number away from itself and add 2. If this result is multiplied by itself, it equals the number plus 24. What is the number?

Given four numbers whose sum is 9900; the second exceeds the first by 1/7 of the first...

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?

The authors recount the 'great tale' of Napier's and Burgi's parallel development of logarithms and urge you to use it in class.

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.

A man, woman, and two boys desire to cross a river, but their boat has weight restrictions!