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

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

In a square box that contains 1000 marbles, how many will it take to reach across the bottom of the box in a straight row?

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

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

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.

In how many ways can a vowel and a consonant be chosen out of the word "logarithms?"

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

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

Given the frustum of a circular cone with height h.

In a given square, inscribe 4 equal circles so that...